SO Im new to java programming and I cannot figure out how to invoke a second met

Question

SO Im new to java programming and I cannot figure out how to invoke a second method in eclipse below is the code im working with its not the entire source code only the spot im trying to invoke a second method and under that the second method code. also it is a void method I am calling so im not sure what to put in the quotations in my main method where I am invoking, I am currently trying to get it to accept the int 1 case since that is the choice for addition on my menu not displayed in this posting.Thanks in advance

int userC = input.nextInt();//user enters their choice
          
          
           switch (userC){//operation is determined based of off user input
           case 1: System.out.println(AdditionP(1.0));
                  
                  
           case 2: do{//subtraction program
                   double n1 = (Math.round(Math.random()*10));
                   double n2 = (Math.round(Math.random()*10));
                   System.out.println("What is "+ n1 + "- "+ n2 +"?");
                   n3 = n1-n2;.....

public static void AdditionP(double n4){
      
       Scanner input = new Scanner(System.in);
      
       n4=1.0;
       double n3 = 0;
       double uA = 0;
       double n1 = 0;
       double n2 = 0;
       do {//addition program
           n1 = (Math.round(Math.random()*10));
           n2 = (Math.round(Math.random()*10));
           System.out.println("What is "+ n1 + "+ "+ n2 +"?");
           n3 = n1+n2;
           uA = input.nextDouble();
           if (n3== uA){
               System.out.println("Correct");
           }
           else{
               System.out.println("Incorrect please try another");
           }

           }while(uA != n3);
       input.close();
         
   }

Explanation / Answer

Ans:

You are asking to call a second method in the same class, to call a method "object" is optinal like you already called a method without Object in switch Cases. we can call a method from anywhere in the class without object.

Generally our main method with String array It should be same, Syntax is

public static void main(String []args){

--- Statements

---Statements

}

you are calling first method in switch, you also call second method also from switch cases in Eclipse also.

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