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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. 		long v = 3 << 11;
  13. 		v = v << 20;
  14. 		System.out.println("(3 << 31):     " + v + "  " + Long.toBinaryString(v));
  15. 		v = v + 1;
  16. 		System.out.println("(3 << 31) + 1: " + v + "  " + Long.toBinaryString(v));
  17. 		int w = (int) v;
  18. 		System.out.println("to_int:        " + w + "  " + Integer.toBinaryString(w));
  19. 		int x = 1_000_000_001;
  20. 		int y = 1_000_000_000;
  21. 		try {
  22. 		    int result = Math.subtractExact(x, y);
  23. 		    System.out.println("The proper result is " + result);
  24. 		} catch(ArithmeticException e) {
  25. 		    System.out.println("Sorry, " + e);
  26. 		}
  27.  
  28. 	}
  29. }
Success #stdin #stdout 0.19s 55912KB
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stdin
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Standard input is empty
stdout
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(3 << 31):     6442450944  110000000000000000000000000000000
(3 << 31) + 1: 6442450945  110000000000000000000000000000001
to_int:        -2147483647  10000000000000000000000000000001
The proper result is 1
https://ideone.com/7eIwRh
language:
Java (HotSpot 12)
created:
20 days ago
visibility:
public

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