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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. 		System.out.printf("%s + %s", 1);
  13. 	}
  14. }
Runtime error #stdin #stdout #stderr 0.07s 34164KB
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stdin
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Standard input is empty
stdout
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1 +
stderr
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Exception in thread "main" java.util.MissingFormatArgumentException: Format specifier '%s'
	at java.base/java.util.Formatter.format(Formatter.java:2672)
	at java.base/java.io.PrintStream.format(PrintStream.java:1053)
	at java.base/java.io.PrintStream.printf(PrintStream.java:949)
	at Ideone.main(Main.java:12)
https://ideone.com/IpqhTS
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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