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- package textarea1;
- import javax.swing.*;
- import java.awt.*;
- import java.awt.event.*;
- public class TextArea1 implements ActionListener{
- JTextArea texto;
- public static void main(String[] args) {
- TextArea1 sistema = new TextArea1();
- sistema.iniciar();
- }
- public void iniciar(){
- JFrame janela = new JFrame();
- JPanel painel = new JPanel();
- JButton botao = new JButton("Clique aqui");
- botao.addActionListener(this);
- texto = new JTextArea(10,20);
- texto.setLineWrap(true);
- JScrollPane barraDeRolagem = new JScrollPane(texto);
- barraDeRolagem.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
- barraDeRolagem.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
- painel.add(barraDeRolagem);
- janela.getContentPane().add(BorderLayout.CENTER, painel);
- janela.getContentPane().add(BorderLayout.SOUTH,botao);
- janela.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
- janela.setSize(350,300);
- janela.setVisible(true);
- }
- @Override
- public void actionPerformed(ActionEvent e) {
- texto.append("Estou escrevendo \n");
- }
- }
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