using substring, help

[papaboy2]

hi, why is it that i can't use if statement on my WholeString Variable? but when i use Println it contains the "[" value?, line is a string variable where value is from input.readline() statement, i can't execute the statement inside if statement, thank you very much

String MySam;
MySam = line;
WholeString = MySam.substring(0,1);
System.out.println(WholeString);
if (WholeString == "[") {
System.out.println("Execute this");
}

 

[sedj]

The operator "==" compares ObjectA with ObjectB on a memory level - ie do the objects reside at the same address in memory. It does not compare for string equality - its not a scripting language, nor are there overloaded operators like C++ !!!

You mean :

if (WholeString.equals("[")) {

However, if you used this :

char mychar = MySam.charAt(0);
if (mychar == '[') {

}

then you can use that because you are comparing primitive data types, not objects.

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