Assignment of list containers

Source: Internet
Author: User

List A and list B values:

If a is a = B directly, when B performs data operations, such as deleting an item, a also changes, because B does not assign the value to, instead, the address of the value is copied to.


1. Use a for loop, and return the value from B to.

For (INT I = 0; I <B. Size (); I ++)
A. Add (B. Get (I ));

2. Assignment of iterative queries

Iterator While (it. hasnext ())
A. Add (it. Next ());

3. assign values using Constructor


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