Java Buffered Reader

Question

 import java.io.*;

 public class TerminateWhen
 {
   public static void main(String args[]) throws IOException
   {
     BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

     String str = "";
     System.out.println("Type \"x\" to exit..");
     do {
       str = br.readLine();
       System.out.println(str);
       }
     while(str!="x");
   }
 }

the problem is even if will type the "x", the loop will not exit..

See http://stackoverflow.com/questions/971954/difference-between-equals-and — Péter Török, Sep 15 '10 at 07:38

score 5 · Accepted Answer · answered Sep 15 '10 at 07:33

5

Try !str.equals("x") !!!

answered Sep 15 '10 at 07:33

helios

13,254
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score 5 · Answer 2 · answered Sep 15 '10 at 07:37

5

Beware "standard" comparison operators when you're working with strings.

str != "x"

compares the two references, not the string's contents. Use the "equals" method to compare the string contents.

answered Sep 15 '10 at 07:37

vulkanino

8,954
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score 1 · Answer 3 · answered Sep 15 '10 at 07:40

1

You must check for equals()

answered Sep 15 '10 at 07:40

Dheeraj Joshi

2,837
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51

Java Buffered Reader

3 Answers3