java对象数组初步研究纪录
java基础篇
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | import java.util.Arrays;public class aa{ public static void main(String[] args){ MonkeyManager m = new MonkeyManager(); m.addMonkey(new Monkey("小白",'公')); m.addMonkey(new Monkey("小黑",'公')); m.addMonkey(new Monkey("小黄",'母')); m.listMonkey(); System.out.println("------------------我是华丽分割线--------------------"); m.addMonkey(new Monkey("小花",'母')); m.addMonkey(new Monkey("小红",'公')); m.listMonkey(); System.out.println("------------------我是华丽分割线--------------------"); m.updateMonkey(new Monkey("小白",'母')); m.listMonkey(); System.out.println("------------------我是华丽分割线--------------------"); m.findMonkey("小黑").print(); m.delMonkey("小黑"); System.out.println("------------------我是华丽分割线--------------------"); m.listMonkey();}}class MonkeyManager{ private Monkey[] monkeys = new Monkey[3]; private int count = 0; public MonkeyManager(){} public void listMonkey(){ for(int i = 0; i<count; i++){ monkeys[i].print();}} public Monkey findMonkey(String name){ for(int i = 0;i<count;i++){ if(monkeys[i].getName().equals(name)){ return monkeys[i];}} return null;} public void updateMonkey(Monkey monkey){ Monkey m = findMonkey(monkey.getName()); if(m!=null){ m.setSex(monkey.getSex());}} public void addMonkey(Monkey m){ if(count>=monkeys.length){ int newLen = (monkeys.length*3)/2+1; monkeys = Arrays.copyOf(monkeys,newLen);} monkeys[count] = m; count++;} public void delMonkey(String name){ for(int i = 0;i<count;i++){ if(monkeys[i].getName().equals(name)){ for(int j = i;j<count-1;j++){ monkeys[j] = monkeys[j+1]; } monkeys[count-1] = null; count--;} }} }class Monkey{ private String name; private char sex; public Monkey(){} public Monkey(String name,char sex){ this.name = name; this.sex = sex;} public void setName(String name){ this.name = name;} public void setSex(char sex){ this.sex = sex;} public String getName(){ return name;} public char getSex(){ return sex; } public void print(){ System.out.println("猴子的名字为："+name+",性别为："+sex);}} |
