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首先把相关容器的布局方式设为 setLayout(null);
然后调用组件的 setBounds() 方法
设置button的位置为(100,100) 长宽分别为 60，25
jButton.setBounds(new Rectangle(100, 100, 60, 25));
import java.awt.Container;import java.awt.Dimension;import java.awt.Rectangle;import java.awt.Toolkit;import javax.swing.JButton;import javax.swing.JCheckBox;import javax.swing.JComboBox;import javax.swing.JFrame;import javax.swing.JPasswordField;import javax.swing.JTextField;public class Log extends JFrame { public static void main(String[] args) { Log log = new Log(); } private JButton btLog; private JTextField tfUser; private JPasswordField tfPwd; private JCheckBox pwdKeep; private JComboBox adminType; public Log() { super("固定资产管理系统"); super.setSize(380, 292); super.setVisible(true); super.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); centered(this); btLog = new JButton("登 录"); btLog.setBounds(new Rectangle(93, 220, 180, 30));//参数分别是坐标x，y，宽，高 this.setLayout(null);//设置布局管理器为空 this.add(btLog); tfUser = new JTextField(); tfUser.setBounds(new Rectangle(73, 115, 220, 25)); this.add(tfUser); tfPwd = new JPasswordField(); tfPwd.setBounds(new Rectangle(73, 150, 220, 25)); this.add(tfPwd); pwdKeep = new JCheckBox("记住密码"); pwdKeep.setBounds(new Rectangle(68, 185, 110, 25)); this.add(pwdKeep); adminType = new JComboBox(new String[] { "普通职员", "管理员", "高级管理员" }); adminType.setBounds(new Rectangle(183, 185, 100, 25)); this.add(adminType); }//布局居中方法 public void centered(Container container) { Toolkit toolkit = Toolkit.getDefaultToolkit(); Dimension screenSize = toolkit.getScreenSize(); int w = container.getWidth(); int h = container.getHeight(); container.setBounds((screenSize.width - w) / 2, (screenSize.height - h) / 2, w, h); }} |
http://www.cnblogs.com/taoweiji/archive/2013/02/17/2914311.html
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原文地址：http://www.cnblogs.com/softidea/p/4529287.html
