java equals源码分析

  public boolean equals(Object anObject) {
        //判断当前对象和传入对象引用是否相同，如果相同则返回true
        if (this == anObject) {
            return true;
        }
        
        
         if (anObject instanceof String) {
            String anotherString = (String)anObject;
            int n = value.length;
           
            if (n == anotherString.value.length) {
                char v1[] = value;
                char v2[] = anotherString.value;
                int i = 0;
            
                while (n-- != 0) {
                    if (v1[i] != v2[i])
                        return false;
                    i++;
                }
                //循环比较完如果char数组没有不同字符则返回true
                return true;
            }
        }
        return false;
    }