why does the catch block give an error with variable not initialized in Java

Question

This is the code that I\'ve written.

int num;
try {
    num=100;
    DoSomething();
    System.out.println(num);
} catch(Exception e) {
    DoSomething1();
}         


        

Answer 1

The problem is that num is not initializated, int num = -1; And the error will go away ;)