私が考えることができるのは、画面サイズを正しく設定していないということだけです。ログは、高さと幅が正しいように見えることを示しています。スイングトレイルから：
package net.bounceme.dur.nntp.swing;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.util.logging.Logger;
import javax.swing.*;
import java.awt.*;
public class HelloWorldSwing {
private static final Logger LOG = Logger.getLogger(HelloWorldSwing.class.getName());
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("HelloWorldSwing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Container c = frame.getContentPane();
// frame.getContentPane();
// c.setBackground(Color.YELLOW);
// adjust to need.
Dimension d = new Dimension(400, 40);
//c.setPreferredSize(d);
//Add the ubiquitous "Hello World" label.
JLabel label = new JLabel("Hello World");
frame.getContentPane().add(label);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int height = screenSize.height - 50;
int width = screenSize.width - 50;
frame.setSize(height, width);
frame.setSize(d);
LOG.info(height + "\t\t\t" + width);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
必須の法的なボイラープレート:
/*
* Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle or the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* This example, like all Swing examples, exists in a package:
* in this case, the "start" package.
* If you are using an IDE, such as NetBeans, this should work
* seamlessly. If you are compiling and running the examples
* from the command-line, this may be confusing if you aren't
* used to using named packages. In most cases,
* the quick and dirty solution is to delete or comment out
* the "package" line from all the source files and the code
* should work as expected. For an explanation of how to
* use the Swing examples as-is from the command line, see
* http://docs.oracle.com/javase/javatutorials/tutorial/uiswing/start/compile.html#package
*/
スクリーンショット:
