JavaSwingDialog弹窗使⽤教程
⼀、新建⼀个带按钮的JFrame 参考教程[跳转]参考代码如下(blog.csdn/jarvan5/article/details/105621342) package GUI.Swing.Dialog弹窗;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class Demo extends JFrame {
private void init(){
//初始化JFrame
this.setVisible(true);
this.setLocation(100,100);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
//容器，放东西
Container contentPane =ContentPane();
//绝对布局
contentPane.setLayout(null);
//按钮
JButton jButton =new JButton("点击弹出⼀个对话框");
//⽔平居中
jButton.setHorizontalAlignment(SwingConstants.CENTER);
jButton.setSize(200,50);
/
/按钮添加到容器
contentPane.add(jButton);
//添加事件javaswing实现购买
jButton.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e){
//new 弹窗
new DemoDialog弹窗();
}
});
}
public static void main(String[] args){
new Demo().init();
}
}
⼆、新建⼀个 DemoDialog弹窗.java ⽤来写弹窗的内容。
2.其他操作和JFrame（Frame)类似
3.问题：设置居中对按钮⽆效？待解决？
package GUI.Swing.Dialog弹窗;
import javax.swing.*;
import java.awt.*;
public class DemoDialog弹窗extends JDialog {
//construct method 构造⽅法初始化弹窗样式
DemoDialog弹窗(){
this.setTitle("Dialog弹窗");
this.setVisible(true);
this.setLocation(200,200);
this.setSize(200,250);
//add one label
Container contentPane =ContentPane();
JLabel jLabel =new JLabel("再容器中添加标签");
contentPane.add(jLabel);
/
/center 居中
jLabel.setHorizontalAlignment(SwingConstants.CENTER);
}
}
三、拓展⾃带的⼏个弹窗样式.
public class Task2 {
Task2()
{
String firstName=JOptionPane.showInputDialog("Please input your first name","Jiawen");
String lastName=JOptionPane.showInputDialog("please input your last name","Deng");
String fullName=firstName+" "+lastName;
JOptionPane.showMessageDialog(null, fullName,"YOUR FULL NMAE",JOptionPane.PLAIN_MESSAGE);
}
}

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