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testing String as immutable

 
Mike Cunningham
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Is there a way to test that a String is immutable by attempting to change the actual string object in the constant pool?
 
R K Singh
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mean ??
 
WiLL Tao
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Is this code ok?
because "==" is shallow compare,so if string is mutable, the refence address will not be changed.
but this code provdes m1 create new ojbect.
 
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