Java JFrame background color not working

Question

I tried using:

frame1.getContentPane().setBackground(Color.yellow);

But it is not working. Can anyone help me?

import java.         


        

Answer 1

Since you did not post an SSCCE, I will do it for you. This shows how to change the background color of a JFrame. Starting from this, you can start adding components to the JFrame and see where you go wrong, instead of letting us look at a few hundred lines of code.

import javax.swing.JFrame;
import java.awt.Color;
import java.awt.EventQueue;

public class ColoredFrame {

  public static void main( String[] args ) {
    EventQueue.invokeLater( new Runnable() {
      @Override
      public void run() {
        JFrame frame = new JFrame( "TestFrame" );
        frame.getContentPane().setBackground( Color.PINK );
        //frame contains nothing, so set size
        frame.setSize( 200, 200 );
        frame.setVisible( true );
        frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
      }
    } );
  }
}