JavaSwing学习笔记（一） JavaSwing学习笔记（一）

一：JFrame(Swing框架类)

package n1; import java.awt.Color; import java.awt.Container; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.SwingConstants; public class MyFrame1 extends JFrame{public void start() { JFrame jf=new JFrame("窗口"); Container container=jf.getContentPane(); container.setBackground(Color.white); JLabel jl=new JLabel("标签"); jl.setHorizontalAlignment(SwingConstants.CENTER); container.add(jl); jf.setVisible(true); jf.setSize(300, 200); jf.setDefaultCloseOperation(EXIT_ON_CLOSE); } public static void main(String[] args) { MyFrame1 myframe=new MyFrame1(); myframe.start(); } }

运行结果：

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二：JDialog(Java对话框)

package n1; import java.awt.Color; import java.awt.Container; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; class MyDialog extends JDialog{public MyDialog(MyFrame frame) { super(frame,"Dialog",true); Container container=getContentPane(); container.add(new JLabel("Hello")); container.setBackground(Color.white); setBounds(120,120,100,100); } } public class MyFrame extends JFrame{ public static void main(String[] args) { new MyFrame(); } public MyFrame() { Container container=getContentPane(); container.setLayout(null); container.setBackground(Color.white); JButton button=new JButton("按钮"); button.setBounds(33, 33, 80, 30); button.addActionListener(new ActionListener() {@Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub new MyDialog(MyFrame.this).setVisible(true); } }); container.add(button); setVisible(true); setSize(300, 200); setDefaultCloseOperation(EXIT_ON_CLOSE); }}

运行结果：