文本域JScroll面板

package lesson5;

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

public class JPanelDemo extends JFrame {
    public JPanelDemo() throws HeadlessException {
        Container container=this.getContentPane();
        container.setLayout(new GridLayout(2,1,10,10));
        JPanel panel1 =new JPanel(new GridLayout(1,3));
        panel1.add(new JButton("1"));
        panel1.add(new JButton("1"));
        panel1.add(new JButton("1"));

        container.add(panel1);
        this.setVisible(true);
        this.setSize(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);


    }

    public static void main(String[] args) {

new JPanelDemo();
    }
}

 

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package lesson5;

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

public class JScrollDemo extends JFrame {

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

        //文本域
        JTextArea textArea = new JTextArea(20, 50);
        textArea.setText("我要提高自己的能力");

        //Scroll面板
        JScrollPane scrollPane=new JScrollPane(textArea);
        container.add(scrollPane);


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

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