What is "return" type in java

Question

I can't understand the "return type"
Is this do {System.out.println(" ");} work?
please describe me what is the uasage of "return type" in java

request:

if you know Malayalam please describe is in Malayalam language

Answer 1

You may get idea from these threads :
https://www.sololearn.com/Discuss/271102/?ref=app
https://www.sololearn.com/discuss/342545/?ref=app