Rassul's Java Lessons 1 : Variables

Rassul's Java Lessons 1 : Variables

public static void letsLearnJava() {
  int x = 2;
  int y = 2;
  int z = x + y;

  // The println function is smart enough to wrap the int value into a String variable :)
  System.out.println(z);  // prints "4".
}

// Less redundant.  You don't need the z variable.
public static void letsLearnJava() {
  int x = 2;
  int y = 2;
  System.out.println(x + y); // prints "4"
}

// SCOPE ERROR
// You don't have access to variables outside of the methods you declare them in
public static void badScope() {
  System.out.println(x); // Exception thrown.  Java is sad :(
}