CODEWITHSUNDEEP
java
skwisgaar
skwisgaar

Reputation: 977

System.exit(1) instead of return

just found an example on Oracle site, they use System.exit() if console is == null, but I can't see why it is better than simple return. Here's the link: http://docs.oracle.com/javase/tutorial/essential/regex/test_harness.html

Upvotes: 2

Views: 1395

Answers (3)

Jigar Joshi
Jigar Joshi

Reputation: 240900

exit(1) means you are exiting from System and setting exit code = 1 means an erroneous termination of the program

whereas return; will terminate that application with exit code = 0, which to the caller means the program terminated successfully

Also See

Upvotes: 3

James-Jesse Drinkard
James-Jesse Drinkard

Reputation: 15703

System.exit will shutdown all the executing threads, closing files, releasing resources, etc... It terminates the JVM.

However, Return is used by an executing thread on a method, but if system.exit is used, a thread will never return. So they are two different things that are used for different purposes.

See the Java 7 Oracle document link.

Upvotes: 1

karolovbrat
karolovbrat

Reputation: 116

System.exit(1) can be useful if you call your java program lets say from a bash script and you would like to react accordingly to success or failure of the java program.

Upvotes: 1

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