问题描述
package jlabel;import java.awt.Color;import javax.swing.JFrame;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.FileInputStream;import java.io.File;import java.io.InputStream;import javax.swing.Icon;import javax.swing.JLabel;import javax.swing.ImageIcon;import javax.swing.JOptionPane;import javax.swing.JTextField;import javax.swing.JButton;import javax.swing.JTextArea;import java.awt.event.WindowEvent;import java.awt.event.WindowAdapter;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;public class Calculagraph{public static void main(String [] args){JFrame frame = new JFrame("闹钟");JTextField time = new JTextField(30);JLabel timeLab = new JLabel("定时时间设定(请输入数字) ：");JTextArea event = new JTextArea(3,10);//JTextField event = new JTextField(80);JLabel eventLab = new JLabel("事件提醒设定 ：");JButton but = new JButton("确 定");but.setBounds(300,120,80,20);String picPath = "D:" + File.separator + "0852193.jpg";File file = new File(picPath);InputStream input = null;byte b[] = new byte[(int)file.length()];try{input = new FileInputStream(file);input.read(b);input.close();}catch(Exception e){e.printStackTrace();}Icon icon = new ImageIcon(b);JLabel lab = null;lab = new JLabel("",icon,JLabel.LEFT );Font fnt = new Font("Serief",Font.ITALIC + Font.BOLD,28);lab.setFont(fnt);lab.setBackground(Color.YELLOW);lab.setForeground(Color.RED);timeLab.setBounds(200,20,170,20);eventLab.setBounds(200,50,100,20);time.setBounds(380,20,150,25);event.setBounds(310,50,220,50);frame.add(timeLab);frame.add(time);frame.add(eventLab);frame.add(event);frame.add(but);frame.add(lab);frame.setSize(600,200);frame.setBackground(Color.WHITE);frame.setLocation(300,200);frame.setLocation(300,200);frame.setVisible(true); }} 这是我写的代码，可是不知道如何是确定按钮点击后，出现一个新的对话框。还有就是如何在新对话框弹出之后，前一个对话自动关闭？ 谢谢高手们！
解决方案
import java.awt.Color;import javax.swing.JFrame;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.FileInputStream;import java.io.File;import java.io.InputStream;import javax.swing.Icon;import javax.swing.JLabel;import javax.swing.ImageIcon;import javax.swing.JTextField;import javax.swing.JButton;import javax.swing.JTextArea;public class TTest{ public static void main(String[] args) { final JFrame frame = new JFrame("闹钟"); JTextField time = new JTextField(30); JLabel timeLab = new JLabel("定时时间设定(请输入数字) ："); JTextArea event = new JTextArea(3, 10); // JTextField event = new JTextField(80); JLabel eventLab = new JLabel("事件提醒设定 ："); JButton but = new JButton("确 定"); but.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { JFrame jf = new JFrameTest(); frame.setVisible(false); jf.setVisible(true); } }); but.setBounds(300, 120, 80, 20); String picPath = "D:" + File.separator + "0852193.jpg"; File file = new File(picPath); InputStream input = null; byte b[] = new byte[(int) file.length()]; try { input = new FileInputStream(file); input.read(b); input.close(); } catch (Exception e) { e.printStackTrace(); } Icon icon = new ImageIcon(b); JLabel lab = null; lab = new JLabel("", JLabel.LEFT); Font fnt = new Font("Serief", Font.ITALIC + Font.BOLD, 28); lab.setFont(fnt); lab.setBackground(Color.YELLOW); lab.setForeground(Color.RED); timeLab.setBounds(200, 20, 170, 20); eventLab.setBounds(200, 50, 100, 20); time.setBounds(380, 20, 150, 25); event.setBounds(310, 50, 220, 50); frame.add(timeLab); frame.add(time); frame.add(eventLab); frame.add(event); frame.add(but); frame.add(lab); frame.setSize(600, 200); frame.setBackground(Color.WHITE); frame.setLocation(300, 200); frame.setLocation(300, 200); frame.setVisible(true); }}class JFrameTest extends JFrame{ public JFrameTest() { init(); } public void init() { this.setSize(300, 300); this.setTitle("弹出框");// this.setVisible(true); }}