在Java中，空字符串（“”）如何存储在内存中？

Question

在Java中，空字符串（“”）如何存储在内存中

空字符串""的长度为0，那么如何将其存储在内存中

Answer 1

从这个answer借来的。程序为空字符串打印32个字节（为字符串池中的“”打印0）

public static void main(String... args) {
    long free1 = free();
    String s = "";
    long free2 = free();
    String s2 = new String("");
    long free3 = free();
    if (free3 == free1) System.err.println("You need to use -XX:-UseTLAB");
    System.out.println("\"\" took " + (free1 - free2) + " bytes and new String(\"\") took " + (free2
            - free3) + " bytes.");
}

private static long free() {
    return Runtime.getRuntime().freeMemory();
}

另外，检查这个answer