OCA Java SE 8 Programmer I Certification Guide

4.8. Review notes

This section lists the main points covered in this chapter.

The class String:

• The class String represents an immutable sequence of characters.
• A String variable can be initialized by using the operator new or by using the assignment operator with String literal values.
• String objects created using a String literal without the new operator are placed in a pool of String objects. Whenever the JRE receives a new request to initialize a String variable using the assignment operator, it checks whether a String object with the same value already exists in the pool. If one is found, it returns the object reference for the existing String object from the pool.
• String objects created using the operator new are never placed in the pool ...