Where is the Java constant pool stored

Run the following methods:

public class Test {
    public static void Main (string[] args) {
        String str = "ABC";
        Char[] Array = {' A ', ' B ', ' C '};
        String str2 = new string (array);
        Use Intern () to put str2 string contents into a constant pool
        STR2 = Str2.intern ();
        This comparison is used to illustrate the string literal constants and we use intern to process the string after it is in the same place
        System.out.println (str = = STR2);
        Well, then, let's intern the hell out of here.
        arraylist<string> list = new arraylist<string> ();
        for (int i = 0; i < 50000000; i++) {
            String temp = string.valueof (i). Intern ();
            List.add (temp);
        }
    }
}

Results:



At Test.main (test.java:16)


The exception information tells us that PermGen is full. Oh, I know where the string constant pool is. PermGen is the so-called method area in the JVM specification.

The above excerpt from

Small example: How to explain the position of a string constant pool thanks to the original author!!!

Where is the Java constant pool stored