The equals() method is used to verify if the state of two Java classes are the same. That’s because using the intern() method ensures the Strings will be stored in the pool. Unlike the previous example with the new keyword, in this case the comparison turns out to be true. (duke.intern() = duke2.intern()) // The result will be true here (duke = duke2) // The result will be false here Now, notice what happens when we use the new keyword to force the creation of two Strings: Behind the scenes, the logic of String pooling is based on the Flyweight pattern. If not, it creates a new String in the pool. First, it verifies if the String you’ve created already exists in the pool. The intern() method is used to store Strings in a String pool. * guaranteed to be from a pool of unique strings. * a string that has the same contents as this string, but is String literals are defined in section 3.10.5 of the * All literal strings and string-valued constant expressions are Public String(char value, int offset, int count). Overloading can make your classes really flexible, including String: My first blog in the Java Challengers series introduced method overloading, which is a technique the String class uses extensively. It’s the same in object-oriented programming. Each of these interfaces supports certain actions: accelerate, brake, turn left, turn right. Do you need to know how the car works under the hood in order to drive it? Of course not, but you do need to know what the interfaces of the car do: things like the accelerator, brakes, and steering wheel. To understand encapsulation better, consider a physical object: a car.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |