为什么Result这段代码的code属性默认是0

Question

public class Result {
public final static String KEY_CODE = "code";
public final static String KEY_MESSAGE = "message";
public final static String KEY_DATA = "data";

public final static Integer CODE_DEFAULT = 0;
public final static String MESSAGE_SUCCESS = "操作成功";
public final static String MESSAGE_FAILURE = "操作失败";

private int code;
private String message = MESSAGE_SUCCESS;
private Object data;

public static Result get() {
    return new Result();
}

public void success(Object data) {
    this.code = 0;
    this.data = data;

}

public void fail() {
    this.code = 99;
    this.message = MESSAGE_FAILURE;
}

public void fail(String message) {
    this.code = 99;
    this.message = message;
}

public void fail(int code, String message) {
    this.code = code;
    this.message = message;
}

public int getCode() {
    return code;
}

public void setCode(int code) {
    this.code = code;
}

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}

public Object getData() {
    return data;
}

public void setData(Object data) {
    this.data = data;
}

}
这是一段后台返回前段的结果代码，比如用户登陆，返回一个结果集，可是用的时候只要get实现一个这样的代码，如果成功了，就直接返回result，失败了就result.fail("登陆失败"),然后返回result，成功返回code==0，失败返回code==99， 但是成功了就直接返回Result，为什么code默认==0，

Answer 1

要么你调用了success(Object data)方法,要么你这个类中有其他的构造方法，将code默认值设置为0了。