When i put for(j=1;j<str1.length();j++) so i am getting different answers why??

Question

public class Program
{
public static void main(String[] args) {
String str1="ab";
byte number=0;
//char name[]=str1.toCharArray();
for(int i=0;i<str1.length();i++)
{
for(int j=i+1;j<str1.length();j++)
{
if(str1.charAt(i)==str1.charAt(j))
{
System.out.print(str1.charAt(i)+" ");
System.out.print(str1.charAt(j)+" ");
number++;
break;
}

}

}
System.out.println(number);
System.out.println((number==0) ? "no dublicate found" : "dublicate found");
}
}

Answer 1

Thnx...

Answer 2

for(int j = 1; j < str1.length(); j++)

<j> always initialize with a value of 1.

for(int j = i + 1; j < str1.length(); j++)

<j> initialize dynamically. Value of <j> depends on value of <i>.

Answer 3

Welcome ...