An example of Java string explanation

1. Create object

For string direct constants in Java programs, the JVM uses a string pool to store them. When a string direct constant is used for the first time, the JVM caches it in the string pool. In general, string objects in the string pool are not garbage collected. When the program needs to use the string again, the reference variable can directly point to the existing string in the string without re creating a new string. The string object created with the new operation does not point to the object in the string pool, but you can use the intern () method to point to the object in the string pool.