채팅창

package awtSample06;

public class mainClass {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new WindowTest();
	}

}

package awtSample06;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.text.BadLocationException;

public class WindowTest extends JFrame /* implements ActionListener */ {

	JTextField textField;
	JTextArea textArea;
	
	JButton btn1, btn2;
	
	public WindowTest() {
		super("textfield");
		
		JPanel panel = new JPanel();
		
		textArea = new JTextArea();
		textArea.setLineWrap(true);
		
		JScrollPane scrPane = new JScrollPane(textArea);
		scrPane.setPreferredSize(new Dimension(400, 300));
		panel.add(scrPane);
		
		
		
		
		JPanel botpan = new JPanel();
		
		textField = new JTextField(20);
		
		btn1 = new JButton("next insert");
		btn1.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
			//	JOptionPane.showMessageDialog(null, "next insert");	
				if(!textField.getText().equals("")) {
					String msg = textField.getText() + "\n";
					textArea.append(msg);	
					
					textField.setText("");
				}
			}
		});
		
		btn2 = new JButton("prev insert");
		btn2.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				
				try {
					
					textArea.insert(textField.getText() + "\n", 
									textArea.getLineStartOffset(0));
					
				} catch (BadLocationException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
			}
		});
		
		botpan.add(textField);
		botpan.add(btn1);
		botpan.add(btn2);
		
		Container contentPane = getContentPane();
		
		contentPane.add(panel, BorderLayout.CENTER);
		contentPane.add(botpan, BorderLayout.SOUTH);		
		
		setBounds(0, 0, 640, 480);
		setVisible(true);
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);		
	}
	/*
	@Override
	public void actionPerformed(ActionEvent arg0) {
		// TODO Auto-generated method stub

	}
	*/

}