java - .setBounds not working for JLabel and JButton

Question

I am trying to change the positioning of a JLabel and a JButton on my GUI. Even though I try to use .setBounds to change their locations; they both just appear in the top centre of the screen.

import java.awt.color.*;
import java.awt.font.*;
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.UIManager.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

public class yo implements MouseListener {

Image image;
JButton button = new JButton("Wassup");
JFrame frame = new JFrame();
JLabel heloo = new JLabel("yo");
JPanel panel = new JPanel()
{
    @Override
    public void paintComponent(Graphics g)
    {
        super.paintComponent(g);
        ImageIcon i = new ImageIcon("hi.jpg");
        image = i.getImage();
        g.drawImage(image,150,150,null);
        g.drawString("Hello",100,100);
        g.drawString("Hi",50,50);
    }
};


public yo()
{
    frame.add(panel);
    frame.setTitle("Hello");
    frame.setSize(500,500);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
    frame.setLocationRelativeTo(null);
    panel.add(heloo);
    panel.add(button);
    button.setBounds(200,100,200,100);
    heloo.setBounds(100,100,100,100);
    button.addMouseListener(this);
}

public void mouseClicked (MouseEvent event)
{
    heloo.setText(String.format("Clicked at %d,%d", event.getX(), event.getY()));
}
public void mouseEntered (MouseEvent Event){}
public void mouseExited (MouseEvent Event){}
public void mousePressed (MouseEvent Event){}
public void mouseReleased (MouseEvent Event){}

public static void main(String[] args)
{
    new yo();
}
}

I apologise about all of the imports, I don't really know which ones I need and which ones are just pointless.

Basically I would like some help on how to change the positioning of my components.

Answer 1

Don't use setBounds() to set the size and location of a component.

Let the layout manager do its job. That is if fact what is happening. A JPanel uses a FlowLayout, so the components are being positioned based on the rules of the FlowLayout. You can change the FlowLayout to align components to the left if you want. Or you can use a different layout manager.

Read the Swing tutorial on Layout Managers to find other layout managers you can use.