通过点击按钮打开新的窗口

通过点击按钮打开新的窗口

通过点击某个按键打开新的窗口，原来的窗口关闭或者不关闭；

主要语句

//创建新的界面
A a=new A();
//将新的界面展示出来，此参数设置为true
A.setVisible(true);
//将旧的界面隐藏，此参数设置为false
B.setVisible(false);

完整代码

界面A

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JButton;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class A extends JFrame {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					A frame = new A();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public A() {
		setTitle("\u8FD9\u662F\u754C\u9762A");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBackground(Color.ORANGE);
		contentPane.setForeground(new Color(255, 0, 0));
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JButton btna = new JButton("\u8FD4\u56DE\u754C\u9762B");
		btna.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				B b=new B();
				b.setVisible(true);
				A.this.setVisible(false);
			}
		});
		btna.setBounds(168, 113, 97, 23);
		contentPane.add(btna);
	}
}

界面B

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.Color;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class B extends JFrame {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					B frame = new B();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public B() {
		setTitle("\u8FD9\u662F\u754C\u9762B");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBackground(Color.PINK);
		contentPane.setToolTipText("");
		contentPane.setForeground(Color.CYAN);
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JButton btna = new JButton("\u8FD4\u56DE\u754C\u9762A");
		btna.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				A a=new A();
				a.setVisible(true);
				B.this.setVisible(false);
			}
		});
		btna.setBounds(139, 112, 97, 23);
		contentPane.add(btna);
	}

}

结果展示