JAVA | JOURNAL - Gohel Manthan

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Java Journal

JAVA JOURNAL PDF

Code

class HelloJava {
    public static void main(String arg[]) {
        System.out.println("Hello Java");
        System.out.print("Java is an OOP");
    }
}

Output

Hello Java
Java is an OOP

Code

class VariableDemo {
    public static void main(String[] arg) {
        int i = 10;
        String n = "Java";
        float f = 5.5f;
        System.out.println("Value of i : " + i);
        System.out.println("Value of n: " + n);
        System.out.println("Value of f: " + f);
    }
}

Output

Value of i : 10
Value of n: Java
Value of f: 5.5

Code

public class LeapYearExample {
    public static void main(String[] args) {
        int year = 2021;
        if(((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)){
            System.out.println("LEAP YEAR");
        } else {
            System.out.println("COMMON YEAR");
        }
    }
}

Output

COMMON YEAR

Code

public class SwitchExample {
    public static void main(String[] args) {
        char ch='L';
        switch(ch) {
            case 'a': case 'e': case 'i': case 'o': case 'u':
            case 'A': case 'E': case 'I': case 'O': case 'U':
                System.out.println("Vowel");
                break;
            default:
                System.out.println("Consonant");
        }
    }
}

Output

Consonant

Code

class FindMin {
    static void min(int arr[]) {
        int min = arr[0];
        for(int i = 1; i < arr.length; i++) {
            if(min > arr[i]) min = arr[i];
        }
        System.out.println(min);
    }
    public static void main(String args[]) {
        int a[] = {33, 3, 1, 5};
        min(a);
    }
}

Output

Code

class Student {
    int id;
    String name;
}
class TestStudent {
    public static void main(String args[]) {
        Student s1 = new Student();
        Student s2 = new Student();
        s1.id = 101;
        s1.name = "Ritul";
        s2.id = 102;
        s2.name = "Amit";
        System.out.println(s1.id + " " + s1.name);
        System.out.println(s2.id + " " + s2.name);
    }
}

Output

101 Ritul
102 Amit

Code

class Employee {
    int id;
    String name;
    float salary;
    void setData(int i, String n, float s) {
        id = i;
        name = n;
        salary = s;
    }
    void getData() {
        System.out.println(id + " " + name + " " + salary);
    }
}
public class TestEmployee {
    public static void main(String[] args) {
        Employee e1 = new Employee();
        Employee e2 = new Employee();
        e1.setData(101, "Ravi", 45000);
        e2.setData(102, "Mohit", 25000);
        e1.getData();
        e2.getData();
    }
}

Output

101 Ravi 45000.0
102 Mohit 25000.0

Code

class Student4 {
    int id;
    String name;
    Student4(int i, String n) {
        id = i;
        name = n;
    }
    void display() { System.out.println(id + " " + name); }
    public static void main(String args[]) {
        Student4 s1 = new Student4(111, "Ritul");
        Student4 s2 = new Student4(222, "Ravi");
        s1.display();
        s2.display();
    }
}

Output

111 Ritul
222 Ravi

Code

class Student5 {
    int id;
    String name;
    int age;
    Student5(int i, String n) {
        id = i;
        name = n;
    }
    Student5(int i, String n, int a) {
        id = i;
        name = n;
        age = a;
    }
    void display() { System.out.println(id + " " + name + " " + age); }
    public static void main(String args[]) {
        Student5 s1 = new Student5(111, "Mohit");
        Student5 s2 = new Student5(222, "Priyanshu", 25);
        s1.display();
        s2.display();
    }
}

Output

111 Mohit 0
222 Priyanshu 25

Code

class Test {
    public static void main(String[] args) {
        int[][] arr = new int[2][]; 
        arr[0] = new int[] { 11, 21, 56, 78 };
        arr[1] = new int[] { 42, 61, 37, 41, 59, 63 };
        
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr[i].length; j++) {
                System.out.print(arr[i][j] + " ");
            }
            System.out.println();
        }
    }
}

Output

11 21 56 78 
42 61 37 41 59 63

Code

class Student6 {
    int id;
    String name;
    Student6(int i, String n) {
        id = i;
        name = n;
    }
    Student6(Student6 s) {
        id = s.id;
        name = s.name;
    }
    void display() { System.out.println(id + " " + name); }
    public static void main(String args[]) {
        Student6 s1 = new Student6(111, "Krupa");
        Student6 s2 = new Student6(s1);
        s1.display();
        s2.display();
    }
}

Output

111 Krupa
111 Krupa

Code

class Animal {
    void eat() { System.out.println("eating...."); }
}
class Dog extends Animal {
    void bark() { System.out.println("barking..."); }
}
class BabyDog extends Dog {
    void weep() { System.out.println("weeping..."); }
}
class TestInheritance {
    public static void main(String args[]) {
        BabyDog d = new BabyDog();
        d.weep();
        d.bark();
        d.eat();
    }
}

Output

weeping...
barking...
eating....

Code

class Adder {
    static int add(int a, int b) { return a + b; }
    static double add(double a, double b) { return a + b; }
}
class TestOverloading {
    public static void main(String[] args) {
        System.out.println(Adder.add(11, 11));
        System.out.println(Adder.add(12.3, 12.6));
    }
}

Output

22
24.9

Code

class Animal {
    Animal() { System.out.println("From animal constructor"); }
    void eat() { System.out.println("eating...."); }
    protected void finalize() { System.out.println("End of animal"); }
}
class Dog extends Animal {
    Dog() { System.out.println("From dog constructor"); }
    void bark() { System.out.println("barking..."); }
    protected void finalize() { System.out.println("End of dog"); }
}
class BabyDog extends Dog {
    BabyDog() { System.out.println("From babydog constructor"); }
    void weep() { System.out.println("weeping..."); }
    protected void finalize() { System.out.println("End of babydog"); }
}
class TestInheritance2 {
    public static void main(String args[]) {
        BabyDog d = new BabyDog();
        d.weep();
        d.bark();
        d.eat();
        d = null;
        System.gc();
    }
}

Output

From animal constructor
From dog constructor
From babydog constructor
weeping...
barking...
eating....
End of babydog

Code

abstract class Shape {
    abstract void draw();
}
class Rectangle extends Shape {
    void draw() { System.out.println("drawing rectangle"); }
}
class Circle extends Shape {
    void draw() { System.out.println("drawing circle"); }
}
class TestAbstraction {
    public static void main(String args[]) {
        Shape s1 = new Circle();
        Shape s2 = new Rectangle();
        s1.draw();
        s2.draw();
    }
}

Output

drawing circle
drawing rectangle

Code

final class ParentClass {
    void showData() { System.out.println("This is a method of final Parent class"); }
}
// Compilation Error will occur here:
class ChildClass extends ParentClass {
    void showData() { System.out.println("This is a method of Child class"); }
}
class MainClass {
    public static void main(String arg[]) {
        ParentClass obj = new ChildClass();
        obj.showData();
    }
}

Output

Compilation error! Cannot inherit from final 'ParentClass'.

Code

interface Animal {
    public void eat();
    public void travel();
}
class MammalInt implements Animal {
    public void eat() { System.out.println("Mammal eats"); }
    public void travel() { System.out.println("Mammal travels"); }
    public int noOfLegs() { return 0; }
}
public class Main {
    public static void main(String args[]) {
        MammalInt m = new MammalInt();
        m.eat();
        m.travel();
    }
}

Output

Mammal eats
Mammal travels

Code

class Main {
    private int data = 30;
    class Inner {
        void msg() { System.out.println("data is " + data); }
    }
    public static void main(String args[]) {
        Main obj = new Main();
        Main.Inner in = obj.new Inner();
        in.msg();
    }
}

Output

data is 30

Code

import java.util.Date;
public class Main {
    public static void main(String args[]) {
        Date date = new Date();
        System.out.println(date.toString());
    }
}

Output

[Current Date & Time, e.g., Sun Mar 08 17:29:12 IST 2026]

Code

public class Main {
    public static void main(String args[]) {
        byte b = 10;
        int i = 30;
        
        //Autoboxing
        Byte byteobj = b;
        Integer intobj = i;
        
        System.out.println("Byte object: " + byteobj);
        System.out.println("Integer object: " + intobj);
        
        //Unboxing
        byte bytevalue = byteobj;
        int intvalue = intobj;
        
        System.out.println("byte value: " + bytevalue);
        System.out.println("int value: " + intvalue);
    }
}

Output

Byte object: 10
Integer object: 30
byte value: 10
int value: 30

Code

package mypack;
public class Simple {
    public static void main(String args[]) {
        System.out.println("Welcome to package");
    }
}

Output

Welcome to package

Code

import java.util.StringTokenizer;
public class Simple {
    public static void main(String args[]) {
        StringTokenizer st = new StringTokenizer("Java OOP Programing Language", " ");
        while (st.hasMoreTokens()) {
            System.out.println(st.nextToken());
        }
    }
}

Output

Java
OOP
Programing
Language

Code

public class Main {
    public static void main(String[] args) {
        int a = 10, b = 0, c = 0;
        System.out.println("Start of main()");
        try {
            c = a / b;
        } catch(ArithmeticException ae) {
            System.out.println(ae);
        } finally {
            System.out.println("I am always there...");
            System.out.println("Value of C:" + c);
            System.out.println("End of main()");
        }
    }
}

Output

Start of main()
java.lang.ArithmeticException: / by zero
I am always there...
Value of C:0
End of main()

Code

public class Main {
    public static void main(String[] args) {
        try {
            int a[] = new int[5];
            a[5] = 30 / 0;
        } catch(ArithmeticException e) {
            System.out.println("Arithmetic Exception occurs");
        } catch(ArrayIndexOutOfBoundsException e) {
            System.out.println("ArrayIndexOutOfBounds Exception occurs");
        } catch(Exception e) {
            System.out.println("Parent Exception occurs");
        }
        System.out.println("rest of the code");
    }
}

Output

Arithmetic Exception occurs
rest of the code

Code

class InvalidAgeException extends Exception {
    InvalidAgeException(String s) { super(s); }
}
class Main {
    static void validate(int age) throws InvalidAgeException {
        if(age < 18) throw new InvalidAgeException("not valid");
        else System.out.println("welcome to vote");
    }
    public static void main(String args[]) {
        try {
            validate(13);
        } catch(Exception m) { 
            System.out.println("Exception occured: " + m); 
        }
        System.out.println("rest of the code...");
    }
}

Output

Exception occured: InvalidAgeException: not valid
rest of the code...

Code

public class ThreadDemo1 {
    public static void main(String[] args) {
        System.out.println("Start of main");
        MyThread1 mt1 = new MyThread1();
        MyThread2 mt2 = new MyThread2();
        mt1.start();
        mt2.start();
        System.out.println("End of main");
    }
}
class MyThread1 extends Thread {
    public void run() {
        for(int i = 1; i <= 10; i++) System.out.println("MyThread-1." + i);
    }
}
class MyThread2 extends Thread {
    public void run() {
        for(int i = 1; i <= 10; i++) System.out.println("MyThread-2." + i);
    }
}

Output

Start of main
End of main
MyThread-1.1
MyThread-2.1
[... Interleaved outputs of threads 1 and 2 ...]

Code

public class ThreadDemo2 {
    public static void main(String[] args) {
        System.out.println("Start of main");
        MyThread mt = new MyThread();
        Thread t1 = new Thread(mt, "Thread-1");
        Thread t2 = new Thread(mt, "Thread-2");
        t1.start();
        t2.start();
        System.out.println("End of main");
    }
}
class MyThread implements Runnable {
    public void run() {
        for(int i = 1; i <= 10; i++) {
            System.out.println(Thread.currentThread().getName() + "." + i);
        }
    }
}

Output

Start of main
End of main
Thread-1.1
Thread-2.1
[... Interleaved output ...]

Code

public class ThreadDemo3 {
    public static void main(String[] args) {
        System.out.println("Start of main");
        MyThread1 mt1 = new MyThread1();
        MyThread2 mt2 = new MyThread2();
        mt1.start();
        mt2.start();
        System.out.println("End of main");
    }
}
class MyThread1 extends Thread {
    public void run() {
        for(int i = 1; i <= 10; i++) {
            System.out.println("MyThread-1." + i);
            Thread.yield();
        }
    }
}
class MyThread2 extends Thread {
    public void run() {
        for(int i = 1; i <= 10; i++) {
            System.out.println("MyThread-2." + i);
            Thread.yield();
        }
    }
}

Output

Start of main
End of main
MyThread-1.1
MyThread-2.1
[... Alternating due to yield ...]

Code

public class ThreadDemo3 {
    public static void main(String[] args) {
        try {
            System.out.println("Start of main");
            MyThread1 mt1 = new MyThread1();
            MyThread2 mt2 = new MyThread2();
            mt1.start();
            mt2.start();
            mt2.join();
            System.out.println("End of main");
        } catch(Exception e) {}
    }
}
class MyThread1 extends Thread {
    public void run() {
        for(int i = 1; i <= 10; i++) {
            System.out.println("MyThread-1." + i);
            try { sleep(100); } catch(Exception e) {}
        }
    }
}
class MyThread2 extends Thread {
    public void run() {
        for(int i = 1; i <= 10; i++) {
            System.out.println("MyThread-2." + i);
            try { sleep(200); } catch(Exception e) {}
        }
    }
}

Output

Start of main
MyThread-1.1
MyThread-2.1
[... Threads run, main blocks ...]
End of main

Code

public class ThreadDemo4 {
    public static void main(String[] args) {
        System.out.println("Start main");
        MyThread mt = new MyThread();
        Thread t1 = new Thread(mt, "Thread-1");
        Thread t2 = new Thread(mt, "Thread-2");
        t1.start();
        t2.start();
        t2.setPriority(t1.getPriority() + 5);
        System.out.println("End main");
    }
}
class MyThread implements Runnable {
    public void run() {
        for(int i = 1; i <= 10; i++) {
            System.out.println(Thread.currentThread().getName());
        }
    }
}

Output

Start main
End main
Thread-2
Thread-2
[... Thread 2 completes faster due to higher priority ...]

Code

import java.io.*;
public class IODemo1 {
    public static void main(String[] args) {
        try {
            File f = new File("abc.txt");
            if(f.createNewFile()) {
                System.out.println("File Sucessfully created");
            } else {
                System.out.println("File already exist");
            }
            System.out.println("File name: " + f.getName());
            System.out.println("Exists: " + f.exists());
        } catch(Exception e) {
            System.out.println(e);
        }
    }
}

Output

File Sucessfully created
File name: abc.txt
Exists: true

Code

import java.io.*;
public class IODemo3 {
    public static void main(String[] args) {
        System.out.println("Content of output.txt file:\n");
        try {
            FileInputStream fin = new FileInputStream("output.txt");
            int c;
            while((c = fin.read()) != -1) {
                System.out.print((char)c);
            }
        } catch(Exception e) { }
    }
}

Output

Content of output.txt file:
[Text content of file]

Code

import java.io.*;
public class IODemo2 {
    public static void main(String[] args) {
        try {
            BufferedInputStream out = new BufferedInputStream(System.in);
            FileOutputStream fout = new FileOutputStream("output.txt");
            System.out.println("Enter text (enter & to end): ");
            int ch;
            while ((ch = out.read()) != '&') {
                fout.write((char)ch);
            }
            fout.close();
        } catch(Exception e) {}
    }
}

Output

Enter text (enter & to end):

Code

import java.io.*;
public class IOStreamsExample {
    public static void main(String args[]) throws IOException {
        File file = new File("D:/myFile.txt");
        FileReader reader = new FileReader(file);
        char chars[] = new char[(int) file.length()];
        reader.read(chars);
        
        File out = new File("D:/CopyOfmyFile.txt");
        FileWriter writer = new FileWriter(out);
        writer.write(chars);
        writer.flush();
        System.out.println("Data successfully written in the specified file");
    }
}

Output

Data successfully written in the specified file

Code

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class FirstApp extends Application {
    @Override
    public void start(Stage primaryStage) {
        Button btn = new Button();
        btn.setText("Say 'Hello World'");
        btn.setOnAction(new EventHandler<ActionEvent>() {
            public void handle(ActionEvent event) {
                System.out.println("Hello World!");
            }
        });
        StackPane root = new StackPane();
        root.getChildren().add(btn);
        Scene scene = new Scene(root, 300, 250);
        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

Hello World!

Code

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.text.*;
import javafx.stage.Stage;

public class TextExample extends Application {
    @Override
    public void start(Stage primaryStage) {
        Text text = new Text();
        text.setText("Hello !! Welcome to JavaFX");
        text.setFill(Color.BLUE);
        text.setStrokeWidth(2);
        text.setStroke(Color.RED);
        text.setFont(Font.font("Comic Sans MS", FontWeight.BOLD, FontPosture.REGULAR, 30));
        StackPane root = new StackPane();
        root.getChildren().add(text);
        Scene scene = new Scene(root, 600, 400);
        primaryStage.setTitle("Text Example");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

Text Example

Hello !! Welcome to JavaFX

Code

import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.paint.Color;
import javafx.scene.shape.*;
import javafx.stage.Stage;

public class ShapeExample extends Application {
    @Override
    public void start(Stage primaryStage) {
        Group group = new Group();
        Rectangle rect = new Rectangle();
        rect.setX(10); rect.setY(10); rect.setWidth(100); rect.setHeight(100);
        rect.setArcHeight(35); rect.setArcWidth(35); rect.setFill(Color.RED);
        
        Circle circle = new Circle();
        circle.setCenterX(300); circle.setCenterY(200); circle.setRadius(100);
        circle.setFill(Color.GREEN);
        
        group.getChildren().addAll(rect, circle);
        Scene scene = new Scene(group, 600, 400);
        primaryStage.setTitle("2D Shape Example");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

2D Shape Example

Code

import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.paint.Color;
import javafx.scene.shape.*;
import javafx.stage.Stage;

public class Shapes3DExample extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Box box1 = new Box();
        box1.setHeight(100); box1.setWidth(100); box1.setDepth(400);
        box1.setTranslateX(200); box1.setTranslateY(200); box1.setTranslateZ(200);
        
        Cylinder cyn = new Cylinder();
        cyn.setRadius(80); cyn.setHeight(200);
        cyn.setTranslateX(400); cyn.setTranslateY(250);
        
        PerspectiveCamera camera = new PerspectiveCamera();
        camera.setTranslateX(100); camera.setTranslateY(100); camera.setTranslateZ(50);
        
        Group root = new Group();
        root.getChildren().addAll(box1, cyn);
        Scene scene = new Scene(root, 450, 350, Color.LIMEGREEN);
        scene.setCamera(camera);
        primaryStage.setScene(scene);
        primaryStage.setTitle("3DShape Example");
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

3DShape Example

Code

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class GridPaneExample extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Label first_name = new Label("First Name");
        Label last_name = new Label("Last Name");
        TextField tf1 = new TextField();
        TextField tf2 = new TextField();
        Button Submit = new Button("Submit");
        
        GridPane root = new GridPane();
        root.addRow(0, first_name, tf1);
        root.addRow(1, last_name, tf2);
        root.addRow(2, Submit);
        
        Scene scene = new Scene(root, 400, 200);
        primaryStage.setTitle("GridPane Layout");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

GridPane Layout

First Name Last Name

Code

import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.effect.ImageInput;
import javafx.scene.image.Image;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class ImageInputExample extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Image img = new Image("https://upload.wikimedia.org/wikipedia/commons/e/e3/Animhorse.gif");
        ImageInput imginput = new ImageInput();
        Rectangle rect = new Rectangle();
        
        imginput.setSource(img);
        imginput.setX(20); imginput.setY(100);
        rect.setEffect(imginput);
        
        Group root = new Group();
        root.getChildren().add(rect);
        Scene scene = new Scene(root, 530, 500, Color.BLACK);
        primaryStage.setScene(scene);
        primaryStage.setTitle("ImageInput Example");
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

ImageInput Example

Code

import javafx.application.Application;
import javafx.animation.FadeTransition;
import javafx.scene.*;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.util.Duration;
import javafx.stage.Stage;

public class AnimationExample extends Application{
    @Override
    public void start(Stage primaryStage) throws Exception {
        Circle cir = new Circle(250, 120, 80);
        cir.setFill(Color.RED);
        cir.setStroke(Color.BLACK);
        
        FadeTransition fade = new FadeTransition();
        fade.setDuration(Duration.millis(5000));
        fade.setFromValue(10);
        fade.setToValue(0.1);
        fade.setCycleCount(1000);
        fade.setAutoReverse(true);
        fade.setNode(cir);
        fade.play();
        
        Group root = new Group();
        root.getChildren().addAll(cir);
        Scene scene = new Scene(root, 500, 250, Color.WHEAT);
        primaryStage.setScene(scene);
        primaryStage.setTitle("Transition example");
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

Transition example

Code

import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.control.Label;
import javafx.scene.paint.Color;
import javafx.scene.text.*;
import javafx.stage.Stage;

public class JavafxLabel extends Application {
    public void start(Stage stage) {
        Label label = new Label("Sample label");
        Font font = Font.font("Brush Script MT", FontWeight.BOLD, FontPosture.REGULAR, 25);
        label.setFont(font);
        label.setTextFill(Color.BROWN);
        label.setTranslateX(10); label.setTranslateY(10);
        
        Group root = new Group();
        root.getChildren().add(label);
        Scene scene = new Scene(root, 400, 300, Color.BEIGE);
        stage.setTitle("Label Example");
        stage.setScene(scene);
        stage.show();
    }
    public static void main(String args[]) { launch(args); }
}

GUI Output Mockup

Label Example

Sample label

Code

import javafx.application.Application;
import javafx.event.*;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class JavafxTextfield extends Application {
    public void start(Stage stage) {
        TextField textField1 = new TextField();
        TextField textField2 = new TextField();
        Label label1 = new Label("Enter Text: ");
        Label label2 = new Label("Entered Text: ");
        Button btn = new Button("Click");
        
        btn.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent arg0) {
                textField2.setText(textField1.getText());
            }
        });
        
        HBox box = new HBox(5);
        box.setPadding(new Insets(25, 5, 5, 50));
        box.getChildren().addAll(label1, textField1, label2, textField2, btn);
        
        Scene scene = new Scene(box, 595, 150, Color.BEIGE);
        stage.setTitle("Text Field Example");
        stage.setScene(scene);
        stage.show();
    }
    public static void main(String args[]) { launch(args); }
}

GUI Output Mockup

Text Field Example

Enter Text: Entered Text:

Code

import javafx.application.Application;
import javafx.collections.*;
import javafx.event.*;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.VBox;
import javafx.scene.text.*;
import javafx.stage.Stage;

public class JavafxListview extends Application {
    public void start(Stage stage) {
        Label label = new Label("Educational qualification:");
        Label label2 = new Label();
        Font font = Font.font("verdana", FontWeight.BOLD, FontPosture.REGULAR, 12);
        label.setFont(font);
        
        ObservableList<String> names = FXCollections.observableArrayList(
            "Engineering", "MCA", "MBA", "Graduation", "MTECH", "Mphil", "Phd");
        ListView<String> listView = new ListView<String>(names);
        listView.setMaxSize(200, 160);
        
        Button btn = new Button("Select Course");
        btn.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent arg0) {
                label2.setText(listView.getItems().toString());
            }
        });
        
        VBox layout = new VBox(10);
        layout.setPadding(new Insets(5, 5, 5, 50));
        layout.getChildren().addAll(label, listView, btn, label2);
        
        Scene scene = new Scene(layout, 400, 300);
        stage.setTitle("List View Example");
        stage.setScene(scene);
        stage.show();
    }
    public static void main(String args[]) { launch(args); }
}

GUI Output Mockup

List View Example

Educational qualification:

Code

import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.control.Slider;
import javafx.stage.Stage;

public class SliderExample extends Application {
    public void start(Stage stage) {
        Group root = new Group();
        Scene scene = new Scene(root, 600, 400);
        stage.setScene(scene);
        stage.setTitle("Slider Sample");
        
        Slider slider = new Slider();
        root.getChildren().add(slider);
        
        stage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

Slider Sample

Code (PlayAudio)

import java.io.File;
import javafx.application.Application;
import javafx.scene.media.*;
import javafx.stage.Stage;

public class PlayAudio extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        String path = "C:\\Users\\malay\\Downloads\\test.mp3";
        Media media = new Media(new File(path).toURI().toString());
        MediaPlayer mediaPlayer = new MediaPlayer(media);
        mediaPlayer.setAutoPlay(true);
        primaryStage.setTitle("Playing Audio");
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

Code (PlayVideo)

import java.io.File;
import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.media.*;
import javafx.stage.Stage;

public class PlayVideo extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        String path = "C:\\Users\\malay\\Downloads\\test.mp4";
        Media media = new Media(new File(path).toURI().toString());
        MediaPlayer mediaPlayer = new MediaPlayer(media);
        MediaView mediaView = new MediaView(mediaPlayer);
        mediaPlayer.setAutoPlay(true);
        
        Group root = new Group();
        root.getChildren().add(mediaView);
        Scene scene = new Scene(root, 500, 400);
        
        primaryStage.setScene(scene);
        primaryStage.setTitle("Playing video");
        primaryStage.show();
    }
    public static void main(String[] args) { launch(args); }
}

GUI Output Mockup

Playing video

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Friday, 27 February 2026

JAVA | JOURNAL