文本框-2022-12-12

文本框

package Lesson06;

import javax.swing.*;
import java.awt.*;
import java.util.Vector;

public class TestTextDemo01 extends JFrame {
    public TestTextDemo01(){

        Container container = this.getContentPane();

        JTextField textField1 = new JTextField("Hello");
        JTextField textField2 = new JTextField("World",20);

        container.add(textField1,BorderLayout.SOUTH);
        container.add(textField2,BorderLayout.NORTH);

        this.setVisible(true);
        this.setBounds(100,100,500,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

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

密码框

package Lesson06;

import javax.swing.*;
import java.awt.*;

public class TestTextDemo02 extends JFrame {
    public TestTextDemo02() {

        Container container = this.getContentPane();

        JPasswordField passwordField = new JPasswordField();
        passwordField.setEchoChar('*');
        container.add(passwordField);

        this.setVisible(true);
        this.setBounds(100, 100, 500, 350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestTextDemo02();
    }
}

文本域

package Lesson05;

import javax.swing.*;
import java.awt.*;

public class JScrollDemo extends JFrame {

    public JScrollDemo(){
        Container container = this.getContentPane();

        //文本域
        TextArea textArea = new TextArea(20, 50);
        textArea.setText("欢迎学习JAVA");

        JScrollPane jScrollPane = new JScrollPane(textArea);
        container.add(jScrollPane);

        this.setVisible(true);
        this.setBounds(100,100,300,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

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