You can have a Map as key but as you pointed out since a Map is (typically) mutable the key changes.
Read moreAre keys in a map unique?
The keys are unique in all maps . The difference between the various maps implementations concern the possibility of null keys, the order of iteration and concurrency issues.
Read moreAre keys in a map unique?
The keys are unique in all maps . The difference between the various maps implementations concern the possibility of null keys, the order of iteration and concurrency issues.
Read moreHow do you initialize an object in Java 8?
Right now I am passing to the following way, by creating the object first, calling the methods to set the values, then passing it to another object method. To to = new To(); to. setEmail(“[email protected]”); to.
Read moreWhat method can be used to create a new instance of an object?
To create a new instance of an object, we use the “new” keyword . This keyword creates a new instance of an object, which we can then assign to a variable, or invoke methods. For example, to create a new StringBuffer object, we would use the new keyword in the following way.
Read moreHow do you initialize an object in Java 8?
Right now I am passing to the following way, by creating the object first, calling the methods to set the values, then passing it to another object method. To to = new To(); to. setEmail(“[email protected]”); to.
Read more