Semicolon at end of 'if' statement

Question

Today, after half an hour of searching for a bug, I discovered that it is possible to put a semicolon after an if statement instead of code, like this:

if(a          


        

Answer 1

look this:

int a,b,c = 0;
if(a == b){
   c =1;
} 
System.out.print(c);//1

so, you can write like this:

if (a == b)c=1;

but,if this code is this:

int a,b,c=0;
if (a != b){
}
if (a == b ){
  c =1;
}

you can write like this:

if(a != b);
if(a == b )c=1;

so,you will know if(a != b); do noting