Close JFrame using mouse hover

Source code below will show you, how to create JFrame that can close, when you hover your cursor on it.

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

import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class CloseJFrameUsingMouseHover
{
public static void main(String[]args)
{
 //Create mouse listener that will listen when someone hover on JFrame
 MouseListener ml=new MouseAdapter()
 {
  public void mouseEntered(MouseEvent event)
  {
   //Put JFrame close code here
   System.exit(0);
  }
 };

 //Create JFrame with title ( HOVER ON THE BOX BELOW !!!!!!!!! )
 JFrame frame=new JFrame("HOVER ON THE BOX BELOW !!!!!!!!!");

 //Add mouse listener to JFrame
 frame.addMouseListener(ml);

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

 //Set JFrame size to :
 //Width : 400 pixels
 //Height : 400 pixels
 frame.setSize(400,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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Close JFrame using mouse click

Source code below will show you, how to close JFrame when click on it.

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

import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class CloseJFrameUsingMouseClick
{
public static void main(String[]args)
{
 //Create mouse listener that will listen when someone click on JFrame
 MouseListener ml=new MouseAdapter()
 {
  public void mouseClicked(MouseEvent event)
  {
   //Put JFrame close code here
   System.exit(0);
  }
 };

 //Create JFrame with title ( CLICK IN THE BOX BELOW !!!!!!!!! )
 JFrame frame=new JFrame("CLICK IN THE BOX BELOW !!!!!!!!!");

 //Add mouse listener to JFrame
 frame.addMouseListener(ml);

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

 //Set JFrame size to :
 //Width : 400 pixels
 //Height : 400 pixels
 frame.setSize(400,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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Close JFrame using keyboard

Source code below will show you how to close JFrame using keyboard press. In this source code we will use "Esc" key. So when someone press "Esc" key, and at the same time JFrame focused, the JFrame will close and this program will exit.

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

import java.awt.event.KeyListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class CloseJFrameUsingKeyboard
{
public static void main(String[]args)
{
 //Create a KeyListener that can listen when someone press Esc key on keyboard
 //You can change for what key that you want, by change value at:
 //VK_ESCAPE
 KeyListener kl=new KeyAdapter()
 {
  public void keyPressed(KeyEvent evt)
  {
   //If someone click Esc key, this program will exit
   if(evt.getKeyCode()==KeyEvent.VK_ESCAPE)
   {
    System.exit(0);
   }
  }
 };

 //Create a JFrame with title ( CLOSE JFRAME USING KEYBOARD )
 JFrame frame=new JFrame("CLOSE JFRAME USING KEYBOARD");

 //add Key Listener to JFrame
 frame.addKeyListener(kl);

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

 //Set JFrame size to :
 //Width : 400 pixels
 //Height : 400 pixels
 frame.setSize(400,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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Get all JFrame in program

Source code below will show you how to get all JFrame that contains in a program

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

import java.awt.Frame;

public class GetAllJFrameInAnApplication
{
public static void main(String[]args)
{
 //Create JFrame with title ( HAHAHAHA )
 JFrame frame1=new JFrame("HAHAHAHA");

 //Create JFrame with title ( HEHEHEHE )
 JFrame frame2=new JFrame("HEHEHEHE");

 //Create JFrame with title ( HUHUHUHU )
 JFrame frame3=new JFrame("HUHUHUHU");

 //Create JFrame with title ( HIHIHIHI )
 JFrame frame4=new JFrame("HIHIHIHI");

 //Create JFrame with title ( ZZZZZZZZ )
 JFrame frame5=new JFrame("ZZZZZZZZ");

 //Create array from type Frame.
 //Store all JFrame into this array.
 Frame[]allJFrame=Frame.getFrames();

 //Print each JFrame title in this application
 for(int i=0; i<allJFrame.length; i++)
 {
  System.out.println("JFrame "+(i+1)+" :"+allJFrame[i].getTitle());
 }
}
}

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Remove JFrame title bar

Source code below will show you, how to remove title bar from a JFrame.

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

public class RemoveJFrameTitleBar
{
public static void main(String[]args)
{
 //Create a JFrame
 JFrame frame=new JFrame();

 //Method setUndecorated(true) will eliminate JFrame title bar
 frame.setUndecorated(true);

 //Set JFrame size to :
 //Width : 400 pixels
 //Height : 400 pixels
 frame.setSize(400,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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Set JFrame layout using Grid Layout

Source code below will show you, how to set JFrame layout using GridLayout. GridLayout that we use in this source code contains 3 rows and 2 columns. When you use GridLayout to set layout, you just need to play with number of row and number of column. After that GridLayout will add your component from left to right. If it reached at last column in a row, it will go to the next row, and it will start again add component from left to right.

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COMPLETE SOURCE CODE FOR : GridLayoutForJFrame.java
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import javax.swing.JFrame;
import javax.swing.JButton;

import java.awt.GridLayout;

public class GridLayoutForJFrame
{
public static void main(String[]args)
{
 //Create a JFrame with title ( Set JFrame layout using Grid Layout )
 JFrame frame=new JFrame("Set JFrame layout using Grid Layout");

 //Create grid layout that contains :
 //3 rows
 //2 columns
 GridLayout layout=new GridLayout(3,2);

 //Set JFrame layout to grid layout with 3 rows and 2 columns
 frame.setLayout(layout);

 //Create 6 buttons that we want to add into JFrame
 JButton button1=new JButton("BUTTON1");
 JButton button2=new JButton("BUTTON2");
 JButton button3=new JButton("BUTTON3");
 JButton button4=new JButton("BUTTON4");
 JButton button5=new JButton("BUTTON5");
 JButton button6=new JButton("BUTTON6");


 //Add all buttons into JFrame

 //Add first button at row number 1 and column number 1
 frame.add(button1);

 //Add second button at row number 1 and column number 2
 frame.add(button2);

 //Add third button at row number 2 and column number 1
 frame.add(button3);

 //Add fourth button at row number 2 and column number 2
 frame.add(button4);

 //Add fifth button at row number 3 and column number 1
 frame.add(button5);

 //Add sixth button at row number 3 and column number 2
 frame.add(button6);

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

 //Set JFrame size :
 //Width : 400 pixels
 //Height : 400 pixels
 frame.setSize(400,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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Set JFrame layout using Border Layout

Source code below will show you how to add component into JFrame that use Border Layout as it's Layout Manager. If you use Border Layout, you must know 5 region that will be use by Border Layout to arrange component in a JFrame:

NORTH

WEST

CENTER

EAST

SOUTH



You cannot change this setting. If you want to add a component, you also must set location of your component. For example, if you want your component locate at SOUTH, you must use BorderLayout.SOUTH. You can see it in complete source code below. Don't forget to set your location.

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COMPLETE SOURCE CODE FOR : BorderLayoutForJFrame.java
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import javax.swing.JFrame;
import javax.swing.JButton;

import java.awt.BorderLayout;

public class BorderLayoutForJFrame
{
public static void main(String[]args)
{
 //Create a JFrame with title ( Border Layout for JFrame layout manager )
 JFrame frame=new JFrame("Border Layout for JFrame layout manager");

 //Set JFrame layout to Border Layout
 frame.setLayout(new BorderLayout());

 //Create 5 buttons that we want to add into JFrame
 JButton button1=new JButton("NORTH");
 JButton button2=new JButton("WEST");
 JButton button3=new JButton("CENTER");
 JButton button4=new JButton("EAST");
 JButton button5=new JButton("SOUTH");

 //Add all buttons into JFrame
 frame.add(button1,BorderLayout.NORTH);
 frame.add(button2,BorderLayout.WEST);
 frame.add(button3,BorderLayout.CENTER);
 frame.add(button4,BorderLayout.EAST);
 frame.add(button5,BorderLayout.SOUTH);

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

 //Set JFrame size
 frame.setSize(600,400);

 //Make JFrame visible. So we can see it.
 frame.setVisible(true);
}
}

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