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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		String a;
  13. 		System.out.print(a == null);
  14. 	}
  15. }
Compilation error #stdin compilation error #stdout 0.1s 320512KB
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stdin
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Standard input is empty
compilation info 
Main.java:13: error: variable a might not have been initialized
		System.out.print(a == null);
		                 ^
1 error
stdout
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Standard output is empty
https://ideone.com/cn6cCg
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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