comparison of two string

[Navneet Mathpal]

why equal is not comparing it although data is same ???



for (int i=0;i<blen;i++)
{
System.out.println("Best :"+best);
String bb=best;
for(int j=0;j<flen;j++)
{
String ff=found[j];
System.out.println("Found "+found[j]);


if(bb.equalsIgnoreCase(ff))
{
count=count+1;
System.out.println("hello");
resfound.add(found[j]);
}

}




OUTPUT IS :

Best :17601089
Found 18769218
Found 17601089
Found 7240354
Found 18668662
Found 530777
Found 12538756
Found 15441407
Found 11669171
Found 12062082
Found 12626411
Best : 18668662
Found 18769218
Found 17601089
Found 7240354
Found 18668662
Found 530777
Found 12538756
Found 15441407
Found 11669171
Found 12062082
Found 12626411
Best : 9967149
Found 18769218
Found 17601089
Found 7240354
Found 18668662
Found 530777
Found 12538756
Found 15441407
Found 11669171
Found 12062082
Found 12626411

 

[Roedy Green]

why equal is not comparing it although data is same ???

see http://mindprod.com/jgloss/string.html#COMPARISON

 

[Andreas Leitgeb]

why equal is not comparing it although data is same ???

According to your output, some of the strings in the found array
have an extra whitespace in front. solution: use String.trim()

 

[Eric Sosman]

According to your output, some of the strings in the found array
have an extra whitespace in front. solution: use String.trim()

A hint for the future: When you're printing string values
for debugging purposes, print something that will make their
endpoints visible even if there's leading or trailing space.
For example, instead of the original

System.out.println("Best :"+best);
System.out.println("Found "+found[j]);

you could try something like

System.out.println("Best: <" + best + ">");
System.out.println("Found <" + found[j] + ">");

so that the output

Best: <17601089>
Found < 17601089>

would reveal the discrepancy more clearly.

 

[Arne Vajhøj]

According to your output, some of the strings in the found array
have an extra whitespace in front. solution: use String.trim()

A hint for the future: When you're printing string values
for debugging purposes, print something that will make their
endpoints visible even if there's leading or trailing space.
For example, instead of the original

System.out.println("Best :"+best);
System.out.println("Found "+found[j]);

you could try something like

System.out.println("Best: <" + best + ">");
System.out.println("Found <" + found[j] + ">");

so that the output

Best: <17601089>
Found < 17601089>

would reveal the discrepancy more clearly.

That is very good advice.

I would use || not <>, but that does not matter.

Arne