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  1. import java.util.Arrays;
  2. import java.util.ArrayList;
  3.  
  4. class Ideone
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		System.out.println(Arrays.asList("a").getClass());
  9. 		Arrays.asList("a").add("b");
  10. 	}
  11. }
Runtime error #stdin #stdout #stderr 0.1s 32432KB
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stdin
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Standard input is empty
stdout
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class java.util.Arrays$ArrayList
stderr
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Exception in thread "main" java.lang.UnsupportedOperationException
	at java.base/java.util.AbstractList.add(AbstractList.java:153)
	at java.base/java.util.AbstractList.add(AbstractList.java:111)
	at Ideone.main(Main.java:9)
https://ideone.com/048Ums
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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