As the name implies when the requested operation is not
supported, we get this error.
Below is a sample program to generate this error.
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public static void main(String args[])
{
String st[]={"Hi","Hello","Bye"};
List list=Arrays.asList(st);
list.add(“Anand”); //Get error at this line
System.out.println(" List: "+list);
}
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If we run this method, we get the below error because we are
trying to add a new element to a list which is not updatable.
Caused by: java.lang.UnsupportedOperationException
at
java.util. List.add(List.java:131)
at
java.util. List.add(List.java:91)
at Test.main(Test.java:7)
I modified the program as below to run without errors.
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public static void main(String args[])
{
String st[]={"Hi","Hello","Bye"};
ArrayList<String>
list = new ArrayList<String>();
//List list=Arrays.asList(st);
list.addAll(Arrays.asList(st));
list.add(“Anand”); //Get error at this line
System.out.println(" List: "+list);
}
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