public class ContainUtil extends Object
ContainUtil
will check if object 1 contains object 2.
Object 1 may be an Object, array, Collection, or a MapConstructor and Description |
---|
ContainUtil() |
public static boolean contains(Object obj1, Object obj2)
obj2
exists in obj1
.
Type Of obj1 | Comparison type | |
null | always return false | |
Map | Map containsKey(obj2) | |
Collection | Collection contains(obj2) | |
Array | there's an array element (e) where e.equals(obj2) | |
Object | obj1.equals(obj2) |
obj1
- obj2
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