Unexpected type

Question

Why does the following code error?
MyMenuInt.java
import java.awt.*;
import javax.swing.*;
public class MyMenuInt extends JFrame
     private static JTextArea jta=new JTextArea(20,15);
     private Integer count=0;
     public MyMenuInt()
          JPanel jp=new JPanel();
          JMenuBar jmb=new JMenuBar();
          JMenu Count=new JMenu("Count");
          JMenuItem inc=new JMenuItem("Inc");
          JMenuItem dec=new JMenuItem("Dec");
          JMenuItem reset=new JMenuItem("Reset");
          JMenuItem exit=new JMenuItem("Exit");
          jp.setLayout(new BorderLayout());
          jta.setText(String.valueOf(count+"\n"));
          jta.setEditable(false);
          JScrollPane jsp=new JScrollPane(jta);
          jp.add(jsp,BorderLayout.CENTER);
          add(jp);
          Count.add(inc);
          Count.add(dec);
          Count.add(reset);
          Count.add(exit);
          jmb.add(Count);
          MyCountListenerInt incl=new MyCountListenerInt(inc,count);
          MyCountListenerInt decl=new MyCountListenerInt(dec,count);
          MyCountListenerInt resetl=new MyCountListenerInt(reset,count);
          MyCountListenerInt exitl=new MyCountListenerInt(exit,count);
          setJMenuBar(jmb);
          Count.setMnemonic('C');
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          setTitle("Practice Exercise Day 17");
          setSize(333,741);
          setVisible(true);
     public static void appendTextArea(String txt)
          jta.append(txt+"\n");
     public static void resetTextArea()
          jta.setText(String.valueOf(0+"\n"));
     public static void main(String args[])
          MyMenuInt mm=new MyMenuInt();
MyCountListenerInt.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MyCountListenerInt implements ActionListener
     private static Integer num;
     //Make num static so that all the instances of this class share one reference of count
     //instead of each instance having its own reference which causes unsync'd output.
     //Since this variable is static, when Java does its optimizations and gets to the 2nd, 3rd, etc
     //instantiations of this class it sees that this variable is already in memory with a reference
     //to count so it uses the existing variable in memory instead of creating another reference.
     private JMenuItem jmi1;
     public MyCountListenerInt(JMenuItem jmi,Integer count)
          num=count;
          jmi1=jmi;
          jmi1.addActionListener(this);
     public void actionPerformed(ActionEvent ae)
          if(ae.getActionCommand().equals("Inc"))
               MyMenuInt.appendTextArea(String.valueOf(num+1));
               num+=1;
          if(ae.getActionCommand().equals("Dec"))
               MyMenuInt.appendTextArea(String.valueOf(num-1));
               num-=1;
          if(ae.getActionCommand().equals("Reset"))
               num=0;
               MyMenuInt.resetTextArea();
          if(ae.getActionCommand().equals("Exit"))
               System.exit(0);
}the error:
MyMenuInt.java:43: unexpected type
required: variable
found   : value
          jta.append(txt+"\n");
                    ^
1 errorthis is from:
public static void appendTextArea(String txt)
          jta.append(txt+"\n");
     }thanks! :)

Answer 1

kajbj wrote:
John_Musbach wrote:
Thanks for the replies, the dashes are really in my code to make it beautiful. My friend said it would work.It doesn't, unless you comment them out. E.g this works:
Oh oops, I totally forgot. Thanks for the reminder! :)