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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. // your code goes here
  13. String maxValue = "81";
  14. int maxLength = maxValue.length();
  15.  
  16. String v1 = "1";
  17. String v2 = " " + v1;
  18.  
  19. System.out.printf("%" + maxLength + "d", v2, v2.substring(maxLength));
  20.  
  21. }
  22. }
Runtime error #stdin #stdout #stderr 0.05s 711168KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
Exception in thread "main" java.util.IllegalFormatConversionException: d != java.lang.String
	at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:4302)
	at java.util.Formatter$FormatSpecifier.printInteger(Formatter.java:2793)
	at java.util.Formatter$FormatSpecifier.print(Formatter.java:2747)
	at java.util.Formatter.format(Formatter.java:2520)
	at java.io.PrintStream.format(PrintStream.java:970)
	at java.io.PrintStream.printf(PrintStream.java:871)
	at Ideone.main(Main.java:19)