Java Help Please

[Fyfey96]

Hey, Started learning a bit of Java and ive been messing about with calling methods in another class and i am trying to send a string from one class to another, alter it and send it back to the main class. So i have two classes.... here they are...

 

Main Class:

 public static void main(String[] args) {
        
        Scanner input = new Scanner(System.in);
        
        System.out.println("Enter your name : ");
        String name = input.nextLine();
        //This is calling another class
        SecondClass SecondClassObject = new SecondClass();
        SecondClassObject.simpleMessage(name);//name is entering the variable (argunment)for other method in other class.
        
        System.out.println(name);
    }

 

Other Class :

public String simpleMessage(String name){ //this is taking the varible sent from the call method
        
        name = name +(" Is a god");
       
        
       }

 

 

 

I want to return "name" to the main method and print.

 

Any help would be appreciated. Thanks 

 

[minibois]

Can't you just access the variable by doing something like NameOfTheScript.NameOfTheVariable? You can do this in for example C# (In Unity3D) so I would suggest trying it out.

[jslowik]

Add a return statement to your method, then in your main class with the main method don't print the local variable, but the method from the other class.

 

You could just make a public variable, but that's poor design.

[madknight3]

Your method isn't returning a value. Add the return statement.

public String simpleMessage(String name){ //this is taking the varible sent from the call method
    name = name +(" Is a god");
    return name;
}

Note that you can shorten it to

public String simpleMessage(String name) {
    return name + " Is a god"; // brackets also aren't doing anything so I removed them too
}

 

[jslowik]

Additionally you're never printing the value from that method. Your print line should be similar to:

System.out.println(SecondClassObject.simpleMessage(name));

And just for giggles, writing your second class like the following is a few less keystrokes:

public String simpleMessage(String name){ //this is taking the varible sent from the call method
        name += " Is a god";
        return name;
    }

 

[Adam7868]

also use

 System.out.print 

  instead of 

 System.out.println 

 it will help keep the input on one line

[jslowik]

1 hour ago, Adam7868 said:

it will help keep the input on one line

Probably mostly personal preference. Don't worry too much about it as you won't be writing console style applications for very long.

 

Just to explain a little, println adds a line break after the printed line, and print doesn't. Some examples here...

 

System.out.println("This is a line");
System.out.println("This is a new line");

will look like:

This is a line

This is a new line

 

Where

System.out.print("This is a line");
System.out.println(" This isn't a new line");

Will look like:

This is a line This isn't a new line

[Fyfey96]

Thanks a lot for your help everyone. Understand a bit better now. I knew about return but couldn't really remember exactly how to implement it. @jslowik hopfully your right and I get away from console soon ?