[JAVA] GUI - JTextField, JTextArea

JTextField : 한 줄 입력

JTextArea : 여러 줄 입력

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JTextField;

class MyFrame14 extends JFrame implements ActionListener{
	JTextField tf = new JTextField(25);	// JTextArea(행, 열)
	JTextArea ta = new JTextArea(18,25);
	String s = "";
	
	public MyFrame14(){
		setLayout(new FlowLayout());
		ta.setEditable(false);
		tf.addActionListener(this);
		add(tf);
		add(ta);
		
		setSize(300,400);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setVisible(true);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		s += tf.getText()+"\n";
		if( e.getSource() == tf ){
			ta.setText(s);
			tf.setText("");
		}
		
	}
}
public class 텍스트영역예제1 {

	public static void main(String[] args) {
		new MyFrame14();

	}

}