Object type compare

[robertob]

I need to be able to make a method which performs a generic Object type comparison:

boolean compare(Object obj1, Object obj2)
{
if(obj1 type == obj2 type)
return true;
else
return false;
}

Example:

Image var1, var2;
int var3, var4;

test1 = compare(var1, var2);
test2 = compare(var3,var4);
test3 = compare(var1,var4);
test4 = compare(var2, var3);

and the result should be: test1=true, test2=true, test3=false, test4=false.

How can I do?

I think I can't use "istanceof", because in this case I must know the type of one of the two object in the comparison. In this case the comparison would be no more generic.

RB
Thanks

[Twilight Wyvern]

The only thing I can think of is making certain cases. Like making a completely genetric compare function with Object I don't think is possible. Like you'd have the instanceof function but you have like things you would think might show up in the program. This way might get a little long so I'd might try and find another way. Sorry.

[robertob]

Thanks

I think I'll solve the problem using the method Object.getClass().toString() and then using a string comparison.

[twobitadder]

boolean compare(Object obj1, Object obj2)
{
if ( (obj1.getClass()).instanceOf(obj2.getClass()) )
return true;

return false;
}

[reinkesm]

The above suggestion doesn't compile. I think you're looking for:

class Test 
{
	public static void main(String[] args) 
	{
		System.out.println("\n-=-= Begin Compare test =-=-");
		String str1 = new String("abc");
		String str2 = new String("bca");
		Integer int1 = new Integer(5);
		
		System.out.println("should be true: "+compare(str1,str2));
		System.out.println("should be false: "+compare(str1,int1));

	}

	public static boolean compare(Object obj1, Object obj2)
	{
		boolean isEqual = false;
		if ( (obj1.getClass()).isInstance(obj2) ) {
			isEqual = true;
		}
		return isEqual;
	}
}