如何在JTextarea/JTextfield中显示字符串

Question

非常基本的问题给你。我是Java新手，迄今为止已经做出了一些相对简单的Javascript程序。我特别喜欢的一个是我称之为完美侮辱者，我决定正确开发它，所以我可以说我已经制定了一个计划。

核心程序尚未完成，但我迄今为止所做的已经足够了。将会有一些计算来决定计算机应该给出哪种响应，但是所有的变量将保持不变。我只需要知道如何将代码打印到JTextArea或JTextField，而不是那个System.out。任何帮助将非常感激 ：）。

import java.awt.Color; 
import java.awt.Font; 
import java.util.Random; 
import java.util.Scanner; 
import java.awt.BorderLayout; 
import java.awt.EventQueue; 

import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.border.EmptyBorder; 
import javax.swing.JTextField; 
import javax.swing.JTextPane; 
import javax.swing.JEditorPane; 
import java.awt.Font; 
import java.awt.Color; 
import javax.swing.JTextArea; 
import javax.swing.JEditorPane; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.JTextArea; 
import javax.swing.JTextField; 
import javax.swing.border.EmptyBorder; 

public class tpiCore { 

    public class rootInterface extends JFrame { 

     private JPanel contentPane; 
     private JTextField input; 

     public void main(String[] args) { 
      EventQueue.invokeLater(new Runnable() { 
       public void run() { 
        try { 
         rootInterface frame = new rootInterface(); 
         frame.setVisible(true); 
        } catch (Exception e) { 
         e.printStackTrace(); 
        } 
       } 
      }); 
     } 

     public rootInterface() { 
      setBackground(Color.GREEN); 
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
      setBounds(100, 100, 450, 550); 
      contentPane = new JPanel(); 
      contentPane.setForeground(Color.GREEN); 
      contentPane.setBackground(Color.BLACK); 
      contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); 
      setContentPane(contentPane); 
      contentPane.setLayout(null); 

      input = new JTextField(); 
      input.setFont(new Font("Lucida Console", Font.PLAIN, 11)); 
      input.setBackground(Color.DARK_GRAY); 
      input.setBounds(10, 447, 414, 54); 
      contentPane.add(input); 
      input.setColumns(10); 

      JEditorPane dtrpnThePerfectInsult = new JEditorPane(); 
      dtrpnThePerfectInsult.setForeground(Color.GREEN); 
      dtrpnThePerfectInsult.setBackground(Color.BLACK); 
      dtrpnThePerfectInsult.setFont(new Font("Lucida Console", Font.PLAIN, 20)); 
      dtrpnThePerfectInsult.setText("  The Perfect Insult"); 
      dtrpnThePerfectInsult.setBounds(10, 11, 414, 35); 
      contentPane.add(dtrpnThePerfectInsult); 

      JTextArea textArea = new JTextArea(); 
      textArea.setLineWrap(true); 
      textArea.setBackground(Color.BLACK); 
      textArea.setFont(new Font("Lucida Console", Font.PLAIN, 13)); 
      textArea.setForeground(Color.GREEN); 
      textArea.setBounds(10, 57, 414, 383); 
      contentPane.add(textArea); 

      } 
     } 

     public static void core(String args[]) { 
      String[] insults = new String[15]; 
      insults[0] = "insult 0"; 
      insults[1] = "insult 1"; 
      insults[2] = "insult 2"; 
      insults[3] = "insult 3"; 
      insults[4] = "insult 4"; 
      insults[5] = "insult 5"; 
      insults[6] = "insult 6"; 
      insults[7] = "insult 7"; 
      insults[8] = "insult 8"; 
      insults[9] = "insult 9"; 
      insults[10] = "insult 10"; 
      insults[11] = "insult 11"; 
      insults[12] = "insult 12"; 
      insults[13] = "insult 13"; 
      insults[14] = "insult 14"; 
      double count = 0; 

      System.out.println("Come on then, hit me with your best shot!"); 

      while (count<10) { 
       String insult1 = insults[(new Random()).nextInt(insults.length)]; 
       System.out.println(insult1); 
       Scanner input = new Scanner(System.in); 
       input.nextLine(); 
       String response = input.toString(); 
       count++; 
      } 

      System.out.println("Okay, I give in. You win."); 

      } 

     } 

Answer 1

JTextArea.setText(string) 
JTextArea.append(string) 

Java文档：

所有的

http://docs.oracle.com/javase/6/docs/api/javax/swing/JTextArea.html