return statement no result in java

Question

I have declared a method in a class named Teacher used return statement,

    public String info(){
    return  "Name is " +name +"Location is "+location;

Then I built the constructor then I called it from main class

Teacher t1= new Teacher("Tim","Guildford","Reader");
t1.info();

However both in cmd windows and intellij , there is no result.

But if I change the method type to void and use system.out.println, every thing is fine.

What is the problem here?

`t1.info()` just generates a `String`-object. You need to print it in order to see it on the screen. — , Jan 19 '16 at 22:18
you are not doing anything with the return value of that function... — njzk2, Jan 19 '16 at 22:19
I think it is unfair to downvote someone who is clearly a beginner... — OneCricketeer, Jan 19 '16 at 22:19
@cricket_007 Downvotes are not personal. It is for distinguishing between good and bad content on StackOverflow. — RaminS, Jan 19 '16 at 22:30
@Gendarme - While I agree, I don't think there was anything wrong with the content under than the lack of understanding stated by "there is no result" — OneCricketeer, Jan 20 '16 at 00:10

score 5 · Answer 1 · answered Jan 19 '16 at 22:18

You aren't using the return. You are calling info() but doing nothing with the return. Try this:

Teacher t1= new Teacher("Tim","Guildford","Reader");
System.out.println(t1.info());

Or store the String in a variable and use it later:

String test = t1.info();

score 2 · Answer 2 · answered Jan 19 '16 at 22:18

2

You are not printing the result of your call. Try System.out.println(t1.info());

answered Jan 19 '16 at 22:18

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score 0 · Answer 3 · answered Jan 19 '16 at 22:20

0

and use system.out.println

Well, you aren't using that in the code you included in your question, that's why nothing ends up in the output.

answered Jan 19 '16 at 22:20

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score 0 · Answer 4 · answered Jan 19 '16 at 22:21

Since info() returns a String, t1.info() is a String. What you have done is to create a String called t1.info() with the value of "Name is " +name +"Location is "+location.

You have to do something with this String now.

If you want to print the String, just print it like this:

System.out.print(t1.info());

return statement no result in java

4 Answers4