题目

测试类（main入口）

public class stu_Main {
	public static void main(String[] args) {
		Student s=new Student();
		//调用接口初始化map,并接收
		Map<String,List<String>> map=new HashMap<String,List<String>>();
		map=s.Get_Initialise();
		
//		Student s1=new Student("117333102","张三","98","44","22");
//		s1.setSname("wang");
		
		System.out.println("请选择你要进行的操作n  1.根据名字模糊查询相关学生信息n  2.查询系统中所有科目及不及格学生信息");
		Scanner sc=new Scanner(System.in);
		int opt=sc.nextInt();
		switch(opt){
			case 1:{
				System.out.print("请输入学生的姓名：");
				String name=sc.next();
				String result=s.general_search(map,name);
				System.out.print(result);
			};break;
			case 2:{
				String result=s.check_all_flunk(map);
				System.out.println(result);
			};break;
			default :{
				System.out.println("系统关闭...");
			};break;
		}
		sc.close();
		
	}
}

Student对象类（提供类成员和方法）

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Student {
	private String Sno;
	private String Sname;
	private String ENscore;
	private String MATHscore;
	private String PEscore;
	public Student(){ }
	public Student( String Sno,
					String Sname,
					String ENscore,
					String MATHscore,
					String PEscore 
					){
		this.Sno=Sno;
		this.Sname=Sname;
		this.ENscore=ENscore;
		this.MATHscore=MATHscore;
		this.PEscore=PEscore;
	}
	public String toString(){
		return "[ "+Sno+" "+Sname+" "+ENscore+" "+MATHscore+" "+PEscore+" ]";
	}
	public String getSno() {
		return Sno;
	}
	public void setSno(String sno) {
		Sno = sno;
	}
	public String getSname() {
		return Sname;
	}
	public void setSname(String sname) {
		Sname = sname;
	}
	public String getENscore() {
		return ENscore;
	}
	public void setENscore(String eNscore) {
		ENscore = eNscore;
	}
	public String getMATHscore() {
		return MATHscore;
	}
	public void setMATHscore(String mATHscore) {
		MATHscore = mATHscore;
	}
	public String getPEscore() {
		return PEscore;
	}
	public void setPEscore(String pEscore) {
		PEscore = pEscore;
	}
	public Map<String, List<String>> Get_Initialise() {
//		String[][] stuu={
//			{"117333440333","张三","55","56","57"},
//			{"117333440334","李四","58","59","60"},
//			{"117333440335","王五","61","62","63"},
//			{"117333440336","张三丰","64","65","66"},
//			{"117333440337","张无忌","67","68","69"}
//	    };
		Map<String,List<String>> map=new HashMap<String,List<String>>();
		//1
		List<String> list=new ArrayList<String>();
		list.add("117333440333");// sno
		list.add("42");// en
		list.add("88");// math
		list.add("99");// PE
		map.put("张三",list);
		//2
		List<String> list2=new ArrayList<String>();
		list2.add("117333440334");
		list2.add("53");
		list2.add("79");
		list2.add("92");
		map.put("李四",list2);
		//3
		List<String> list3=new ArrayList<String>();
		list3.add("117333440335");
		list3.add("21");
		list3.add("84");
		list3.add("85");
		map.put("王五",list3);
		//4
		List<String> list4=new ArrayList<String>();
		list4.add("117333440336");
		list4.add("65");
		list4.add("58");
		list4.add("16");
		map.put("张三丰",list4);
		//5
		List<String> list5=new ArrayList<String>();
		list5.add("117333440337");
		list5.add("97");
		list5.add("95");
		list5.add("34");
		map.put("张无忌",list5);
		// 返回初始化Map
		return map;
	}
	public String check_all_flunk(Map<String, List<String>> mymap) {
		Set<Map.Entry<String,List<String>>> entrySet=mymap.entrySet();
		Iterator<Map.Entry<String,List<String>>> it=entrySet.iterator();
		int count_EN=0,
			count_Math=0,
			count_PE=0;
		String EN="英语成绩不及格的有：",
			   Math="高数成绩不及格的有：",
			   PE="体育成绩不及格的有：";
		while(it.hasNext()){
			Map.Entry<String,List<String>> map=it.next();
			String name=map.getKey();
			/* String Student_Number=map.getValue().get(0); */
			double en_score=Double.parseDouble(map.getValue().get(1));
			double math_score=Double.parseDouble(map.getValue().get(2));
			double PE_score=Double.parseDouble(map.getValue().get(3));
			if(en_score<60){
				count_EN++;
				EN+=name+" ";
			}
			if(math_score<60){
				count_Math++;
				Math+=name+" ";
			}
			if(PE_score<60){
				count_PE++;
				PE+=name+" ";
			}
		}
		EN+="(共"+count_EN+"人)";
		Math+="(共"+count_Math+"人)";
		PE+="(共"+count_PE+"人)";
		String result=EN+"n"+Math+"n"+PE;
		return result;
	}
	public String general_search(Map<String, List<String>> mymap,String match_name){
		Set<Map.Entry<String,List<String>>> entrySet=mymap.entrySet();
		Iterator<Map.Entry<String,List<String>>> it=entrySet.iterator();
		String str="为您搜索到以下信息：n";
		while(it.hasNext()){
			Map.Entry<String,List<String>> map=it.next();
			String name=map.getKey();
			if(name.contains(match_name)){
				String Student_Number=" "+map.getValue().get(0)+" ";
				String en_score=map.getValue().get(1)+" ";
				String math_score=map.getValue().get(2)+" ";
				String PE_score=map.getValue().get(3);
				str+="[ "+name+Student_Number+en_score+math_score+PE_score+" ]n";
			}
		}
		return str;
	}
}

最后

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