第一次提问~
今天在看String的字符串匹配实现,看到里面有个private的成员offset。
/** The offset is the first index of the storage that is used. */
private final int offset;
完了之后再String的一个constructor中看到了这种访问
/**
* Allocates a new string that contains the sequence of characters
* currently contained in the string buffer argument. The contents of the
* string buffer are copied; subsequent modification of the string buffer
* does not affect the newly created string.
*
* @param buffer
* A {@code StringBuffer}
*/
public String(StringBuffer buffer) {
String result = buffer.toString();
this.value = result.value;
this.count = result.count;
this.offset = result.offset;
}
有点乱,是不是我忽略或者理解错了什么?求大家指导