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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 str = " I am seal \n\n \t where are we?\n\n\n\n\n\n";
  13. String result = str.replaceAll("(?m)(^\\s+|[\\s&&[^\\n]](?=\\s|$)|\\s+\\z)", "");
  14. System.out.println(result);
  15. }
  16. }
Success #stdin #stdout 0.04s 320576KB
stdin
Standard input is empty
stdout
I am seal
where are we?