Which Java class is commonly used for reading input from the user?

Answer the questions below.

What is the output of this program?

public class Test {
 public static void main(String[] args) {
   int nb = 4;
   nb = incrementByTwo(nb);
   System.out.println("nb = " + nb);
 }

 public static int incrementByTwo(int num) {
   num = num + 2;
   return num;
 }
}

What is the output of this program?

public class Test {
 public static void main(String[] args) {
   int nb = 4;
   incrementByTwo(nb);
   System.out.println("nb = " + nb);
 }

 public static void incrementByTwo(int num) {
   num = num + 2;
 }
}

A keyword describing a method that does not return a value is:

What will be printed on the output after the execution of Java-code below:

The first line of the method is called:

What happens with the caller method, while the control goes to the called method:

An if-statement contained within another if-statement is called

Order the operators by precedence from lowest to highest