scope of local variables in java

[Dishi Jain]

I have a confusion in below piece of code :

void go(int ouch) {
		ouch++;

		for (int ouch = 3; ouch < 6; ouch++)
			;

		System.out.print(" " + ouch);

	}

On line no 4. "duplicate local variables" compilation error comes.

please help me understand why?

Because as per my knowledge, the ouch variable in for loop has it's scope limited to for loop. can it not supersede the method parameter

ouch

here? The way method parameters will supersede member variables?

Thanks.
Dish

[Henry Wong]

The ranch office forum is for questions / discussions regarding the coderanch site. Let's move this topic to the Java in general forum.

Henry

[Henry Wong]

Dishi Jain wrote:

void go(int ouch) {
		ouch++;

		for (int ouch = 3; ouch < 6; ouch++)
			;

		System.out.print(" " + ouch);

	}

On line no 4. "duplicate local variables" compilation error comes.

please help me understand why?

Because as per my knowledge, the ouch variable in for loop has it's scope limited to for loop. can it not supersede the method parameter

ouch

here? The way method parameters will supersede member variables?

See section 6.4 of the Java Language Specification (http://docs.oracle.com/javase/specs/jls/se7/html/jls-6.html#d5e6988), shadowing of a local variable is not allowed in Java.

Henry