JAVA2EVERYONE: set

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Set JOptionPane background color

After i make some review over internet and java forum lastly i understand how to change JOptionPane background color.You can try compile and execute simple code below and see it's result.

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COMPLETE SOURCE CODE FOR : SetJOptionPaneBackgroundColor.java
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::Click Here To Download This Java Source Code::


import javax.swing.JOptionPane;
import javax.swing.UIManager;

import javax.swing.plaf.ColorUIResource;

public class SetJOptionPaneBackgroundColor
{
public static void main(String[]args)
{
UIManager uim=new UIManager();
uim.put("OptionPane.background",new ColorUIResource(255,0,0));
uim.put("Panel.background",new ColorUIResource(255,0,0));

JOptionPane.showMessageDialog(null,"Hello world","HELLO WORLD",JOptionPane.INFORMATION_MESSAGE);
}
}

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Set JTextField selection color

Complete source code below will show you how to set JTextField selection color.

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COMPLETE SOURCE CODE FOR : SetJTextFieldSelectionColor.java
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import javax.swing.*;

import java.awt.*;

public class SetJTextFieldSelectionColor
{
public static void main(String[]args)
{
 JTextField jtf=new JTextField("Select this text");

 //Color that will use as JTextField's selection color
 //It is base on RGB value
 //Red=255
 //Green=0
 //Blue=0
 //You can use color picker at above to get RGB value
 Color selectionColor=new Color(255,0,0);

 //Set JTextField selection color
 jtf.setSelectionColor(selectionColor);

 JFrame myWindow=new JFrame("Set JTextField selection color");

 myWindow.add(jtf);
 myWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 myWindow.setSize(400,50);
 myWindow.setLocationRelativeTo(null);
 myWindow.setVisible(true);
}
}

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Set JTextField caret color

Complete source code below will show you, how to set JTextField caret color.

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COMPLETE SOURCE CODE FOR : SetJTextFieldCaretColor.java
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import javax.swing.*;

import java.awt.*;

public class SetJTextFieldCaretColor
{
public static void main(String[]args)
{
 JTextField jtf=new JTextField(20);
 jtf.setFont(new Font("Verdana",Font.BOLD,34));

 JFrame myFrame=new JFrame("Set JTextField caret color");

 //Set caret color base on RGB value
 //R=255
 //G=0
 //B=0
 //You can get RGB value from color picker at above
 jtf.setCaretColor(new Color(255,0,0));

 myFrame.setLayout(new FlowLayout());
 myFrame.add(jtf);
 myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 myFrame.pack();
 myFrame.setLocationRelativeTo(null);
 myFrame.setVisible(true);
}
}

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Set file to Read-only in java

Complete source code below will show you, how to set a file to Read-only in java.

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COMPLETE SOURCE CODE FOR : SetFileReadOnly.java
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import java.io.File;

public class SetFileReadOnly
{
public static void main(String[]args)
{
File myFile=new File("MyFile.txt");

//Set MyFile.txt to Read-only
myFile.setReadOnly();
}
}

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Click here to download MyFile.txt

Note : Put MyFile.txt with java file above at the same location.

Set JFrame decoration to MetalLookAndFeel decoration

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COMPLETE SOURCE CODE FOR : SetJFrameDecorationToMetalLookAndFeel.java
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import javax.swing.*;
import java.awt.FlowLayout;

public class SetJFrameDecorationToMetalLookAndFeel
{
public static void main(String[]args)
{
 //Set JFrame decoration to current look and feel decoration
 //You can try to make this line as comment and
 //after that try compile and execute it to see it's differential
       JFrame.setDefaultLookAndFeelDecorated(true);
      
       JButton myButton=new JButton("Click On Me");
      
 JFrame myFrame=new JFrame("Set JFrame window decoration to current look and feel");
 myFrame.setLayout(new FlowLayout());

 myFrame.add(myButton);
 myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 myFrame.setSize(400,400);
 myFrame.setLocationRelativeTo(null);
 myFrame.setVisible(true);
}
}

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Set JSlider tick color

Complete source code below will show you, how to set JSlider tick color. I have tried to find method in JSlider class to set JSlider tick color...but, i can't find it. So i tried to create UI Delegate only for SliderUI that change JSlider tick color. You can try to compile both source code below. Make sure both java file below locate at the same location. JSlider's tick color is set in MyNewMetalSliderUI.java.You can try to change it's color follow what color that you want base on RGB value. After you compile SetJSliderTickColor.java and MyNewMetalSliderUI.java, you try execute SetJSliderTickColor.java. This is because, main method contain in this file.Oooo...before i forget, it's only handle horizontal slider. If you want to make it can use for vertical slider, you can try overwrite method paintMajorTickForVertSlider(Graphics g, Rectangle tickBounds, int y) and paintMinorTickForVertSlider(Graphics g, Rectangle tickBounds, int y) in MetalSliderUI class. You can review it in Java SE API for MetalSliderUI class.

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COMPLETE SOURCE CODE FOR : MyNewMetalSliderUI.java
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import javax.swing.*;

import java.awt.*;

import javax.swing.plaf.ColorUIResource;

import javax.swing.plaf.metal.MetalSliderUI;

import javax.swing.plaf.ComponentUI;

public class MyNewMetalSliderUI extends MetalSliderUI
{
// Create our own slider UI
public static ComponentUI createUI(JComponent c )
{
 return new MyNewMetalSliderUI();
}

//*******************HORIZONTAL MAJOR TICK*******************
public void paintMajorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
{
 int coordinateX=x;

 if(slider.getOrientation()==JSlider.HORIZONTAL)
 {
  //Create color using RGB value(RED=255,GREEN=0,BLUE=0)
  //You can use Color picker above to get RGB value for color that you want
  Color majorTickColor=new Color(255,0,0);
 
  //Set color that will use to draw MAJOR TICK using created color
  g.setColor(majorTickColor);
 
  //Draw MAJOR TICK
  g.drawLine(coordinateX,0,coordinateX,tickBounds.height);
 }
}
//*******************HORIZONTAL MAJOR TICK*******************

//*******************HORIZONTAL MINOR TICK*******************
public void paintMinorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
{
 int coordinateX=x;

 if(slider.getOrientation()==JSlider.HORIZONTAL)
 {
  //Create color using RGB value(RED=12,GREEN=255,BLUE=0)
  //You can use Color picker above to get RGB value for color that you want
  Color majorTickColor=new Color(12,255,0);
 
  //Set color that will use to draw MINOR TICK using created color
  g.setColor(majorTickColor);
 
  //Draw MINOR TICK
  g.drawLine(coordinateX,0,coordinateX,tickBounds.height/2);
 }
}
//*******************HORIZONTAL MINOR TICK*******************
}

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COMPLETE SOURCE CODE FOR : SetJSliderTickColor.java
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import javax.swing.*;

import java.awt.*;

public class SetJSliderTickColor
{
public SetJSliderTickColor()
{
 //Create slider using JSlider
 JSlider mySlider=new JSlider();

 //Set major tick spacing to 10
 mySlider.setMajorTickSpacing(10);

 //Set minor tick spacing to 1
 mySlider.setMinorTickSpacing(1);

 //Make slider's numbers visible
 mySlider.setPaintLabels(true);

 //Make slider's ticks visible
 mySlider.setPaintTicks(true);

 //Create a window using JFrame with title ( Set JSlider tick color )
 JFrame frame=new JFrame("Set JSlider tick color");

 //Set JFrame layout to FlowLayout
 frame.setLayout(new FlowLayout());

 //Add created JSlider into JFrame
 frame.add(mySlider);

 //Set JFrame's default close operation
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 //Set JFrame size
 frame.setSize(500,300);

 //Set JFrame locate at center of screen
 frame.setLocationRelativeTo(null);

 //Make JFrame visible
 frame.setVisible(true);
}

public static void main(String[]args)
{
 /***********Set our own UI Delegate for Slider*************/
 UIManager uim=new UIManager();

 //MyNewMetalSliderUI contain settings that use to change tick color
 uim.put("SliderUI","MyNewMetalSliderUI");
 /***********Set our own UI Delegate for Slider*************/

 SetJSliderTickColor sjstc=new SetJSliderTickColor();
}
}

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Set JOptionPane warning icon

Complete source code below will show you, how to set warning icon in JOptionPane.

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COMPLETE SOURCE CODE FOR : SetJOptionPaneWarningIcon.java
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import javax.swing.*;

public class SetJOptionPaneWarningIcon
{
public static void main(String[]args)
{
 //null-Message Box appear in no parent component
 //Warning Icon-text in message box
 //WARNING-JOptionPane title
 //JOptionPane.WARNING_MESSAGE-Set warning icon that will be show in message box
 JOptionPane.showMessageDialog(null,"Warning Icon","WARNING",JOptionPane.WARNING_MESSAGE);
}
}