Assign variable value inside if-statement

Variables can be assigned but not declared inside the conditional statement:

int v;
if((v = someMethod()) != 0) return true;

You can assign, but not declare, inside an if:

Try this:

int v; // separate declaration
if((v = someMethod()) != 0) return true;

Yes, you can assign the value of variable inside if.

I wouldn't recommend it. The problem is, it looks like a common error where you try to compare values, but use a single = instead of == or ===.

It will be better if you do something like this:

int v;
if((v = someMethod()) != 0) 
   return true;

an assignment returns the left-hand side of the assignment. so: yes. it is possible. however, you need to declare the variable outside:

int v = 1;
if((v = someMethod()) != 0) {
    System.err.println(v);
}