NOT SOLVED Pong game problem with checking if ball hit paddle

[acoustic seal]

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[dawn condor]

import java.awt.*;
import java.awt.event.KeyEvent;

public class Paddle extends Rectangle {
    int xPosition;
    int yPosition;
    final int id;
    Paddle(int xPosition, int yPosition, int id){
        super(xPosition, yPosition, 20, 100);
        this.xPosition = xPosition;
        this.yPosition = yPosition;
        this.id = id;
    }
    public void draw(Graphics2D graphics2D){
        if (id == 1){
            graphics2D.setColor(new Color(0x00ff00));
        } else if (id == 2) {
            graphics2D.setColor(new Color(0xff0000));
        }
        else {
            System.out.println("Unexpected paddle ID: "+id);
            return;
        }
        graphics2D.fillRect(xPosition, yPosition, 20, 100);
    }
    public void keyPressed(KeyEvent e){
        switch (e.getKeyCode()){
            case 87:
                if (id == 1){
                    movePaddle(-10);
                }
                break;
            case 83:
                if (id == 1){
                    movePaddle(10);
                }
                break;
            case 38:
                if (id == 2){
                    movePaddle(-10);
                }
                break;
            case 40:
                if (id == 2){
                    movePaddle(10);
                }
                break;
        }
    }
    public void movePaddle(int yPositionChange){
        // check if paddle is out of bounds
        if (!((yPosition <= 0 && yPositionChange < 0) || (yPosition >= 300 & yPositionChange > 0))){
            yPosition += yPositionChange;
        }
    }

}

Paddle class

import java.awt.*;
import javax.swing.*;

public class Ball extends Rectangle {
    int xPosition;
    int yPosition;
    int xVelocity;
    int yVelocity;
    Ball(int xPosition, int yPosition, int xVelocity, int yVelocity){
        super(xPosition, yPosition, 30, 30);
        this.xPosition = xPosition;
        this.yPosition = yPosition;
        this.xVelocity = xVelocity;
        this.yVelocity = yVelocity;
    }
    public void draw(Graphics2D graphics2D){
        graphics2D.setColor(new Color(0xffffff));
        graphics2D.fillOval(xPosition, yPosition, 25, 25);
    }
    public void moveBall(){
        xPosition += xVelocity;
        // check if hit border
        if (xPosition <= 0){
            // hit left border
        } else if (xPosition >= 570) {
            // hit right border

        }
        // bounce of top or bottom
        if (yPosition <= 0 || yPosition >=370){
            yVelocity *= -1;
            // multiplying velocity by -1 means that direction is reversed
        }
        yPosition += yVelocity;
    }
}

Ball class

[dawn condor]

NOT SOLVED Pong game problem with checking if ball hit paddle

[acoustic seal]

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[hallow tartan]

Could you also share the code where you check for collision between the paddle and the ball ?