package comparabledemo; import java.util.Arrays; public class StudentCompare implements Comparable<StudentCompare> { private String name; private int number; public StudentCompare() { } public StudentCompare(String name, int number) { super(); this.name = name; this.number = number; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getNumber() { return number; } public void setNumber(int number) { this.number = number; } /** * 覆寫compareTo方法 */ public int compareTo(StudentCompare o) { // TODO Auto-generated method stub if (this.number > o.number) return 1; else if (this.number < o.number) return -1; return 0; } /** * 覆寫tosring方法 */ @Override public String toString() { return name + "學號爲:" + number; } /** * 覆寫equals方法 */ @Override public boolean equals(Object obj) { // TODO Auto-generated method stub if (this == obj) { return true; } else { if (obj instanceof StudentCompare) { StudentCompare s = (StudentCompare) obj;// 類型轉換 if ((this.name == s.name) && (this.number == s.number)) return true; else return false; } } return super.equals(obj); } public static void main(String[] args) { StudentCompare [] s={new StudentCompare("李成明", 55100617),new StudentCompare("王瑤", 55100619),new StudentCompare("李大鵬", 55100614),new StudentCompare("趙國良", 55100613),new StudentCompare("趙國良", 55100613),new StudentCompare("胖子", 55100607),new StudentCompare("白胖", 55100623)}; Arrays.sort(s); for(int x=0;x<s.length;x++){ System.out.println(s[x]); } if(s[1].equals(s[2])){ System.out.println(s[1].name+"等於"+s[2].name); } if(!s[3].equals(s[2])){ System.out.println(s[3].name+"不等於"+s[2].name); } } }
java比較器的應用
發表評論
所有評論
還沒有人評論,想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.