public boolean equals(Object anObject) {

 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++;

 }

 return true;

 }

 }

 return false;

 }

package cn.ywq.test;

class MyString {

    char[] value;

    public MyString(char[] value) {

        this.value=value;  //通过构造方法将字符传入

    }

    public int equalsString(Object obj) {

        if(this==obj){

            return 0;

        }

        //若该对象是MyString类型的

        if(obj instanceof MyString){

            MyString string =(MyString) obj;

            int n=this.value.length;

            if (n>string.value.length) {  //先判断长度的关系

                return 1;

            }else if(n<string.value.length){

                return -1;

            }else{   //若长度相等

                 char v1[] = this.value;

                 char v2[] = string.value;

                    int i = 0;

                    while (n-- != 0) {  //按照数组的每一位进行比较

                        if (v1[i] > v2[i]){

                            return 1;

                        }else if(v1[i] < v2[i]){

                            return -1;

                        }

                        i++;

                    }

                    return 0;  //若while循环正常结束，则说明相等，返回0

            }

        }

        return -100;  //若传入的不是MyString类型的对象

    }

}

package cn.ywq.test;

public class Test {

    public static void main(String[] args) {

        char[] value={'a','b','c','d'};

//        char[] value2={'a','b','c','d','e'};

//        char[] value3={'c','b','c','d'};

        char[] value4={'a','b','c',};

        MyString myString = new MyString(value);

        MyString s=new MyString(value4);

        int i = myString.equalsString(s);

        System.out.println(i);

    }

}