Positions the given Frame in the middle of the default screen device. Remember to call this method AFTER setting the width and height of the frame. - Java Swing

Java examples for Swing:JFrame

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Description

Positions the given Frame in the middle of the default screen device. Remember to call this method AFTER setting the width and height of the frame.

Demo Code


//package com.java2s;
import java.awt.Frame;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;

public class Main {
    /**/*from ww  w  .j av a2s  . c  om*/
     * <p>Positions the given <tt>Frame</tt> in the middle of the
     * default screen device.</p>
     * <p>Remember to call this method AFTER setting the <tt>width</tt>
     * and <tt>height</tt> of the <tt>frame</tt>.</p>
     * @param frame the {@link Frame} to position in the middle of the
     * default screen device.
     */
    public static void setPositionToMidScreen(Frame frame) {
        GraphicsDevice defaultScreen = GraphicsEnvironment
                .getLocalGraphicsEnvironment().getDefaultScreenDevice();
        Rectangle screenSize = defaultScreen.getDefaultConfiguration()
                .getBounds();

        int midx = screenSize.width / 2;
        int midy = screenSize.height / 2;

        int posx = midx - (frame.getWidth() / 2);
        int posy = midy - (frame.getHeight() / 2);

        frame.setLocation(posx, posy);
    }
}

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