How to put System.out.println() in a variable

Question

I have this code here I want to use. I basically want to use string and variable together but save it in a variable

Int a = 27;
Int b = 22;
String question = System.out.println("what is " + a + "+" + b);

System.out.println(question);

println() method return type is void. In your code you are expecting return value from it eg: "String question = System.out.println("what is " + a + "+" + b);" cause of this conpile time error. try this String question = "what is " + a + "+" + b + "\n"; — , Nov 28 '18 at 11:19
Unless you want to do something fancier, in which case you can use [`String::format`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html#format(java.lang.String,java.lang.Object...)) — Federico klez Culloca, Nov 28 '18 at 11:19
Or, `MessageFormat#format()` as: `String question = MessageFormat.format("What is {0} + {1}, a, b)` — Prashant, Nov 28 '18 at 11:21
This is what you're Looking for: [Redirect-stdout-to-a-string-in-java](https://stackoverflow.com/questions/4183408/redirect-stdout-to-a-string-in-java) — comrad, Nov 28 '18 at 11:21

score 2 · Answer 1 · edited Nov 28 '18 at 12:27

2

You can easily concat strings for a variable like you do it in System.out.println.

So

String question ="what is " + a + "+" + b;

would do the job.

edited Nov 28 '18 at 12:27

TheWildHealer

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answered Nov 28 '18 at 11:20

SAM

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Agreed, but don't forget that question should be of type String! – Vallas Nov 28 '18 at 11:23

score 2 · Answer 2 · answered Nov 28 '18 at 11:22

You are trying to assign the return value of System.out.println("what is " + a + "+" + b); to your variable question, however, System.out.println does not return anything. You have to first creat your variable, and then print it, like so :

Int a = 27;
Int b = 22;
String question = "what is " + a + "+" + b;

System.out.println(question);

score 1 · Answer 3 · answered Nov 28 '18 at 11:27

1

Remove the System.out.println() from the string variable question. So, String question = "what is " + a + "+" + b; When u want toask the question print the variable question with System.out.println()

answered Nov 28 '18 at 11:27

Sajjad Ahmed

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score 1 · Answer 4 · answered Nov 28 '18 at 12:54

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Try this instead, Use String concatenation:

Int a = 27;
Int b = 22;
String questionStr = "what is " + a + " + " + b;
System.out.println(questionStr);

answered Nov 28 '18 at 12:54

Irshaad Moosuddee

210
2
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How to put System.out.println() in a variable

4 Answers4