当JVM加载包含String文字的类

When JVM loads a class containing a String literal

String str = "hello";

它以UTF-8编码从类文件中读取字符串文字，并从中创建一个char数组

it reads string literal from class file in UTF-8 encoding and creates a char array from it

char[] a = {'h', 'e', 'l', 'l', 'o'};

然后使用String(char [])构造函数从此char数组中创建一个String对象

then it creates a String object from this char array using String(char[]) constructor

new String(a)

然后，JVM将String对象放置在String池中，并将对此String对象的引用分配给 str 变量.

then JVM places the String object in String pool and assigns the reference to this String object to str variable.