标签:new int system double english string 地址 数学 exti
一、实验代码如下:
1 package 实验7; 2 3 import java.util.Scanner; 4 5 public class Student { 6 public int i=0,id=1,nj,x; 7 public static int count=1,count1=1; 8 public static double wl,wlw,yw,sx,yy,yw1,sx1,yy1; 9 public String xing,name,zy,address; 10 public double date,avg,chinese,math,english; 11 static Scanner shuru=new Scanner(System.in); 12 public Student(String xing,String name,String zy,int nj,int id,String address,double date,double chinese,double math,double english) 13 { 14 this.xing=xing; 15 this.name=name; 16 this.zy=zy; 17 this.nj=nj; 18 this.x=this.nj*100; 19 this.id=id; 20 if(this.zy.equals("网络工程")){ 21 this.id=this.x+count; 22 } 23 24 if(this.zy.equals("生物技术")) 25 this.id=this.x+count1; 26 27 28 this.address=address; 29 this.date=date; 30 this.chinese=chinese; 31 this.math=math; 32 this.english=english; 33 34 } 35 36 public void name_chazhao(String temp) { 37 if(this.xing.equals(temp)) { 38 System.out.println(name+" "+zy+" "+nj+" "+id+" "+address+" "+date+" "+" "+chinese+" "+math+" "+english); 39 } 40 } 41 public void date_chazhao(double temp) { 42 for(i=0;i<3;i++) 43 if(this.date==temp) { 44 System.out.println(name+" "+zy+" "+nj+" "+id+" "+address+" "+date+" "+chinese+" "+math+" "+english); 45 break; 46 } 47 } 48 public void address_chazhao(String temp) { 49 if(address.equals(temp)) { 50 System.out.println(name+" "+zy+" "+nj+" "+" "+id+" "+address+" "+date+" "+chinese+" "+math+" "+english); 51 } 52 } 53 public void tongjichengji() { 54 if(this.zy.equals("网络工程")) { 55 this.yw=this.yw+chinese; 56 this.sx=this.sx+math; 57 this.yy=this.yy+english; 58 } 59 if(this.zy.equals("生物技术")) { 60 this.yw1=this.yw1+chinese; 61 this.sx1=this.sx1+math; 62 this.yy1=this.yy1+english; 63 } 64 } 65 public static void main(String[] args) { 66 Student[] stu=new Student[3]; 67 stu[0]=new Student("张","张灿","网络工程",2017,1111,"山东枣庄",1998,100,90,80); 68 stu[1]=new Student("李","李会通","网络工程",2017,2222,"海南万宁",1999,100,95,90); 69 stu[2]=new Student("马","马万虎","网络工程",2017,3333,"青海格尔木",1999,100,98,96); 70 String temp; 71 double year; 72 Scanner shuru=new Scanner(System.in); 73 int j=1; 74 while(j!=0) { 75 System.out.println("1 姓查找 2 出生年查找 3 地址查找 0 退出"); 76 j=shuru.nextInt(); 77 switch(j) { 78 case 1: 79 System.out.println("请输入查找的姓:"); 80 temp=shuru.next(); 81 for(int i=0;i<3;i++) { 82 stu[i].name_chazhao(temp); 83 };break; 84 case 2:System.out.println("请输入查找的年份:"); 85 year=shuru.nextDouble(); 86 for(int i=0;i<3;i++) { 87 stu[i].date_chazhao(year); 88 };break; 89 case 3:System.out.println("请输入查找的地址:"); 90 temp=shuru.next(); 91 for(int i=0;i<3;i++) { 92 stu[i].address_chazhao(temp); 93 };break; 94 } 95 } 96 System.out.println("查询专业的成绩:"); 97 temp=shuru.next(); 98 for(int i=0;i<3;i++) { 99 if(stu[i].zy.equals("网络工程")) 100 stu[i].tongjichengji(); 101 if(stu[i].zy.equals("生物技术")) 102 stu[i].tongjichengji(); 103 } 104 if(temp.equals("网络工程")) 105 System.out.println("语文分数为:"+yw+"数学分数为:"+sx+"英语分数为"+yy); 106 if(temp.equals("生物技术")) 107 System.out.println("语文分数为:"+yw1+"数学分数为:"+sx1+"英语分数为"+yy1); 108 } 109 }
二、实验结果:
1 姓查找 2 出生年查找 3 地址查找 0 退出
2
请输入查找的年份:
1999
李会通 网络工程 2017 201701 海南万宁 1999.0 100.0 95.0 90.0
马万虎 网络工程 2017 201701 青海格尔木 1999.0 100.0 98.0 96.0
1 姓查找 2 出生年查找 3 地址查找 0 退出
1
请输入查找的姓:
张
张灿 网络工程 2017 201701 山东枣庄 1998.0 100.0 90.0 80.0
1 姓查找 2 出生年查找 3 地址查找 0 退出
3
请输入查找的地址:
海南万宁
李会通 网络工程 2017 201701 海南万宁 1999.0 100.0 95.0 90.0
1 姓查找 2 出生年查找 3 地址查找 0 退出
0
查询专业的成绩:
生物技术
语文分数为:0.0数学分数为:0.0英语分数为0.0
三、实验心得:
在定义数据类型时一定不要加上static,不然后面的对象数据会覆盖之前的数据
标签:new int system double english string 地址 数学 exti
原文地址:https://www.cnblogs.com/itsRes/p/10822346.html