nulllayoutdemo.java

Java 程序设计源码 只提供了部分

/**
	空布局管理器显示的界面，调整窗口大小后，其他控件的位置和大小不会随着调整。
*/

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.Container;

public class NULLLayoutDemo extends JFrame {
	private JLabel jlbUser = new JLabel();
	private JLabel jlbPwd = new JLabel();
	private JTextField jtfUser = new JTextField();
	private JTextField jtfPwd = new JTextField();
	private JButton jbLog = new JButton();
	private Container container = this.getContentPane();

	public NULLLayoutDemo () {
		super("空布局");
		this.setSize(350,200);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

	public static void main(String[] args) {
		NULLLayoutDemo nl = new NULLLayoutDemo();
		nl.setLayout();
		nl.setVisible(true);
	}

	public void setLayout() {
		container.setLayout(null);
		
		jlbUser.setText("User");
		container.add(jlbUser);
		jlbUser.setBounds(16,26,42,16);
		
		jlbPwd.setText("Pwd");
		container.add(jlbPwd);
		jlbPwd.setBounds(16,56,40,16);

		container.add(jtfUser);
		jtfUser.setBounds(73,25,255,22);

		container.add(jtfPwd);
		jtfPwd.setBounds(73,57,253,22);

		jbLog.setText("Login");
		container.add(jbLog);
		jbLog.setBounds(125,101,73,25);
	}
}