附加另一个类的Textarea结果

Question

我有两个班级Game 和班级wampusGUI.在wampusGUI课堂上我有一个在该方法下textarea命名.我试图从课堂上得到结果.但是当我试图从那个班级进入时.在运行良好,也将结果在该类(我只是通过简单的测试来 法),但不追加到.这是我的代码.displayTextAreatextarea1()appendtextareaGamefunctionSystem.out.print()textarea

// Code of wampusGUI  class
public class wampusGUI extends javax.swing.JFrame {

    /**
     * Creates new form wampusGUI
     */
    public wampusGUI() {
        initComponents();
    }

    public void textArea1(String text) {
        System.out.print(text);
        displayTextArea.append(text); // this is not appending to textarea.
    }

           /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {

                new wampusGUI().setVisible(true);
                   Game g = new Game();
                   g.testing();
            }
        });
    }

//这是Game类的代码

      private wampusGUI gui;

      public void testing () {         
          String welCome=welcome();
          gui= new wampusGUI();
          gui.textArea1(welCome);            
     }

Answer 1

在代码中进行此更改

在你的头等舱wampusGUI

public class wampusGUI extends javax.swing.JFrame {

    /**
     * Creates new form wampusGUI
     */
    public wampusGUI() {
        initComponents();
    }

    public void textArea1(String text) {
        System.out.print(text);
        displayTextArea.append(text); // this is not appending to textarea.
    }

           /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {

                wampusGUI w=new wampusGUI();
                w.setVisible(true);
                Game g = new Game(w);
                g.testing();
            }
        });
    }

而对于二等游戏

private wampusGUI gui;

//Add Contructor with Parameter

     public Game(wampusGUI w){
      //put this line of code at the end  
      gui=w;
     }

      public void testing () {         
          String welCome=welcome();          
          gui.textArea1(welCome);            
     }

这会工作......