how to call return method in java code example

Example 1: java method

public class Main {
  public static void main(String args[]) {
    SayHi();
    
    int sum = AddNums(5, 6);
    System.out.println(sum);
  }
  
  public static void SayHi() { //This method has no return value
    System.out.println("Hi!");
  }
  
  public static int AddNums(int a, int b) { //This method has a return value
    return a + b;
}

Example 2: how to create a function that returns in java

// a method for computing the area of the rectangle
    public int getArea() {
        return width * height;
    }