走火入魔了，求解救，java String

java6中subString方法其实还是引用调用者的char[]，只是修改了offset和count的位置，这导致了public String(String original)方法中加了一个判断：

public String(String original) {
     int size = original.count;
     char[] originalValue = original.value;
     char[] v;
       if (originalValue.length > size) {
          // The array representing the String is bigger than the new
          // String itself.  Perhaps this constructor is being called
          // in order to trim the baggage, so make a copy of the array.
             int off = original.offset;
             v = Arrays.copyOfRange(originalValue, off, off+size);
      } else {
          // The array representing the String is the same
          // size as the String, so no point in making a copy.
         v = originalValue;
      }
     this.offset = 0;
     this.count = size;
     this.value = v;
     } 

在java7中修改了subString的方法，只要调用subString()，都返回一个新的字符串，于是把public String(String original)中的判断去掉了：

 public String(String original) {
         this.value = original.value;
         this.hash = original.hash;
     } 

那么对于String s=new String("hello")，这段代码，在jdk7的环境下，其实只有一个char[]数组吗？在常量池中？使用javap -verbose -c分析了字节码文件，可以肯定调用的就是String(String original)方法。