Question

哪位大神帮忙做一下这两道题，非常感谢！

帮忙做一下第五题和第六题，谢谢！

Answer 1

public class Students{ private String sid; private String sname; private int age; private char sex; public String getSid() { return sid; } public void setSid(String sid) { this.sid = sid; } public String getSname() { return sname; } public void setSname(String sname) { this.sname = sname; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public char getSex() { return sex; } public void setSex(char sex) { this.sex = sex; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + age; result = prime * result + sex; result = prime * result + ((sid == null) ? 0 : sid.hashCode()); result = prime * result + ((sname == null) ? 0 : sname.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; News other = (News) obj; if (age != other.age) return false; if (sex != other.sex) return false; if (sid == null) { if (other.sid != null) return false; } else if (!sid.equals(other.sid)) return false; if (sname == null) { if (other.sname != null) return false; } else if (!sname.equals(other.sname)) return false; return true; } @Override public String toString() { return "News [age=" + age + ", sex=" + sex + ", sid=" + sid + ", sname=" + sname + "]"; }} 可以再详细一点吗？重写equals方法、hashCode方法和toString方法是什么意思

Answer 2

考虑路UK土鲫鱼斤斤计较