CODEWITHSUNDEEP
javaswing
Aqeel Hashim
Aqeel Hashim

Reputation: 11

Unknown error occurring when compiling in eclipse

public class code extends JFrame{
   /**
    * 
    */
   private static final long serialVersionUID = 1L;
   public boolean flag = true;
   JButton Bill;
   JButton Enter;
   JTextField Items;
   JTextField Amount;
   public java.util.List<String> Item_list = new ArrayList<String>();
   public java.util.List<String> quantity = new ArrayList<String>();

   public code() {
      super("Market");

      setLayout(new FlowLayout());
      do {
         Items = new JTextField("Enter the Item u wish to purchase");
         add(Items);
         Items.addActionListener(
            new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    command(e.getActionCommand());
                }
            }
         );

         Amount = new JTextField("Enter the quantity of the product");
         add(Amount);
         Amount.addActionListener(
            new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    commandInt(e.getActionCommand());
                }
            }
         );
         Bill = new JButton();
         add(Bill);
         Bill.addActionListener(
            new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    flag = false;
                }
            }
         );

      } while(flag);
   }    

   public void command(String userT) {
      try {
         Item_list.add(userT);
      } catch(Exception e){
        System.out.println("what was that");
      }
   }

   public void commandInt(String string) {
      try {
        quantity.add(string);
      } catch(Exception e) {
        System.out.println("what was that");
      }
   }
}

This code is basically just a system where u input the item and the amount and it stores it in a list but something is obviously wrong because it doesn't compile. Further when it does compile they highlighted region JTextField area. there seems to be no apparent problem.

Upvotes: 0

Views: 58

Answers (2)

Christian Tapia
Christian Tapia

Reputation: 34176

Try importing the classes you are using:

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;

Upvotes: 0

gyroninja
gyroninja

Reputation: 111

As you didn't specify the error or warning I'll give a general answer.

If you hover over the words that are underlined then they will give you a brief description of the problem.

In eclipse you can use the shortcut alt + enter to get suggestions on how to solve the problem.

If the problem is an error then it will be highlighted red. Else, if it is a warning then it will be underlined yellow.

An error is a fault in the code you wrote where a warning is more of a suggestion from a good friend telling you to fix something.

Upvotes: 1

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