Thread: Bug in Java ?? substring( int x, int y)

Hi Guys,

This simple code returns "Not Iqual" but should return "Iqual" the test is very simple str1 = "AAAA"; str2="AA"; str3=str1.substring(0,2)

Printing:
str1="AAAA"
str2="AA"
str3="AA"

The comparison between str2 with str3 returns different. (Where is the error ? Or bug ??)

I'm using Netbeans 7.3 and JDK 1.7.0.17

Thanks

Fallow Code


public class String01 {
public static void main(String[] args) {
String str1 = "AAAA";
String str2 = "AA";
String str3 = str1.substring(1, 2);

System.out.println(str1);
System.out.println(str2);
System.out.println(str3);

if (str2 == str3) {
System.out.println("Iqual");
} else {
System.out.println("Not Iqual");
}
}

u can use .equals operator to equal the two strings
== operator not working properly in the case of string
you write if(str2.equals(str3))

thanks