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  1.  
  2. import java.util.*;
  3. import java.lang.*;
  4. import java.io.*;
  5.  
  6. class Ideone
  7. {
  8. 	public static void main (String[] args) throws java.lang.Exception
  9. 	{
  10. 		TreeSet<Number> t=new TreeSet<>();
  11. 		t.add(0);
  12. 		t.add(1L);
  13.         System.out.println(t);
  14. 	}
  15. }
Runtime error #stdin #stdout #stderr 0.07s 380160KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Exception in thread "main" java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Long
	at java.lang.Long.compareTo(Long.java:50)
	at java.util.TreeMap.put(TreeMap.java:560)
	at java.util.TreeSet.add(TreeSet.java:255)
	at Ideone.main(Main.java:12)
https://ideone.com/gfm7J9
language:
Java (12.0.1)
created:
11 years ago
visibility:
public

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