Change default metal look and feel color

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COMPLETE SOURCE CODE FOR : ChangeMetalLookAndFeelColor.java
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import javax.swing.plaf.metal.DefaultMetalTheme;

import javax.swing.plaf.metal.MetalLookAndFeel;

import javax.swing.plaf.ColorUIResource;

import javax.swing.*;

import java.awt.FlowLayout;

public class ChangeMetalLookAndFeelColor
{
public ChangeMetalLookAndFeelColor()
{
 JFrame.setDefaultLookAndFeelDecorated(true);

 MetalLookAndFeel.setCurrentTheme(new OrangeTheme());

 JFrame frame=new JFrame("Orange Theme");

 frame.getContentPane().setLayout(new FlowLayout());

 frame.getContentPane().add(new JButton("JButton"));
 frame.getContentPane().add(new JCheckBox("JCheckBox"));
 frame.getContentPane().add(new JTextField("JTextField"));

 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setSize(500,500);
 frame.setLocationRelativeTo(null);
 frame.setVisible(true);
}

public static void main(String[]args)
{
 ChangeMetalLookAndFeelColor cmlafm=new ChangeMetalLookAndFeelColor();
}

class OrangeTheme extends DefaultMetalTheme
{
 //NEW COLOR FOR METAL LOOK AND FEEL
 ColorUIResource primary1=new ColorUIResource(255,215,76);
 ColorUIResource primary2=new ColorUIResource(255,198,0);
 ColorUIResource primary3=new ColorUIResource(205,162,11);

 ColorUIResource secondary1=new ColorUIResource(255,187,57);
 ColorUIResource secondary2=new ColorUIResource(255,168,0);
 ColorUIResource secondary3=new ColorUIResource(255,214,104);
 //NEW COLOR FOR METAL LOOK AND FEEL

 protected ColorUIResource getPrimary1()
 {
  return primary1;
 }

 protected ColorUIResource getPrimary2()
 {
  return primary2;
 }

 protected ColorUIResource getPrimary3()
 {
  return primary3;
 }

 protected ColorUIResource getSecondary1()
 {
  return secondary1;
 }

 protected ColorUIResource getSecondary2()
 {
  return secondary2;
 }

 protected ColorUIResource getSecondary3()
 {
  return secondary3;
 }
}
}

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Change jframe background color

Source code below will show you how to change jframe background color. You can try new color base on RGB value by change value at Color b=new Color(R_value,G_value,B_value). You can use "Color picker" above to get new R,G and B value.

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COMPLETE SOURCE CODE FOR : ChangeJFrameBackgroundColour.java
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import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Color;

public class ChangeJFrameBackgroundColour
{
public static void main(String[]args)
{
 JFrame a=new JFrame("CHANGE BACKGROUND COLOUR");

 //Now we will try change it's value
 Color b=new Color(120,255,0);

 JPanel c=new JPanel();
 c.setBackground(b);

 a.add(c);
 a.setSize(600,200);
 a.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 a.setVisible(true);

 //I hope you enjoy
 //Bye
}
}

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Change java radio button text color

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COMPLETE SOURCE CODE FOR : ChangeJavaRadioButtonTextColor.java
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import javax.swing.JFrame;
import javax.swing.JRadioButton;

import java.awt.FlowLayout;
import java.awt.Color;

public class ChangeJavaRadioButtonTextColor
{
public static void main(String[]args)
{
 JRadioButton a=new JRadioButton("I AM A RADIO BUTTON");
 JFrame b=new JFrame("CHANGE RADIO BUTTON TEXT COLOR");
 b.setLayout(new FlowLayout());

 //METHOD setForeground will change radio button's text color
 //You can see more color in Color class on Java API
 a.setForeground(Color.GREEN);

 b.add(a);

 b.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 b.setSize(400,400);
 b.setVisible(true);
}
}

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Source code to determine display mode for current screen can change or not using java

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COMPLETE SOURCE CODE FOR : DetermineDisplayModeCanChangeOrNot.java
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import java.awt.GraphicsEnvironment;
import java.awt.GraphicsDevice;

public class DetermineDisplayModeCanChangeOrNot
{
 public static void main(String[]args)
 {
  GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
  GraphicsDevice gd=ge.getDefaultScreenDevice();
  
  //METHOD isDisplayChangeSupported() returns true if this GraphicsDevice  supports low-level display changes.
  boolean change=gd.isDisplayChangeSupported();
  
  if(change==true)
  {
   System.out.println("DISPLAY MODE CAN CHANGE");
  }
  
  else
  {
   System.out.println("DISPLAY MODE CANNOT CHANGE");
  }
 }
}

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Change cursor for a component

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COMPLETE SOURCE CODE FOR : HowToChangeComponentCursor.java
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import java.awt.Frame;
import java.awt.Component;
import java.awt.Cursor;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class HowToChangeComponentCursor
{
 public static void main(String[]args)
 {
  WindowListener wl=new WindowAdapter()
  {
   public void windowClosing(WindowEvent evt)
   {
    System.exit(0);
   } 
  };
  
  Frame a=new Frame("HOVER YOUR CURSOR IN THIS FRAME");
  a.addWindowListener(wl);
  
  //METHOD setCursor WILL SET NEW CURSOR FOR COMPONENT
  a.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
  
  a.setSize(800,600);
  a.setVisible(true);
 }
}

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