Swing—文本框(文本框，密码框，文本域)

Swing—文本框(文本框，密码框，文本域)

文本框

package com.deng.lesson06;

import javax.swing.*;
import java.awt.*;
//文本框
public class TestTextDemo01 extends JFrame {
    public TestTextDemo01(){
        Container container = this.getContentPane();

        JTextField textField = new JTextField("hello");
        JTextField textField1 = new JTextField("world", 20);

        container.add(textField,BorderLayout.SOUTH);
        container.add(textField,BorderLayout.NORTH);

        this.setVisible(true);
        this.setSize(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestTextDemo01();
    }
}

密码框

package com.deng.lesson06;

import javax.swing.*;
import java.awt.*;
//密码框
public class TestTextDemo02 extends JFrame {
    public TestTextDemo02() {
        Container container = this.getContentPane();
        //面板
        JPasswordField passwordField = new JPasswordField();//****
        passwordField.setEchoChar('*');

        container.add(passwordField);

        this.setVisible(true);
        this.setSize(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new TestTextDemo02();
    }
}

文本域

package com.deng.lesson06;

import javax.swing.*;
import java.awt.*;
//文本域
public class TestTextDemo03 extends JFrame {
    public TestTextDemo03(){
        Container container = this.getContentPane();
        //文本域
        JTextArea textArea = new JTextArea(20, 50);
        textArea.setText("欢迎光临");
        //面板Scroll
        JScrollPane scrollPane = new JScrollPane(textArea);
        container.add(scrollPane);

        this.setVisible(true);
        this.setBounds(100,100,300,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new TestTextDemo03();
    }
}