1 Object[] key_arr = hashmap.keySet().toArray();
2 Arrays.sort(key_arr);
3 for (Object key : key_arr) {
4 Object value = hashmap.get(key);
5 }
1 package Aug11.Collection;
2
3 import java.util.*;
4
5 public class EmployeeTest {
6 static int EmId=237;
7 public static void main(String[] args) {
8 Scanner reader=new Scanner(System.in);
9 HashMap map = new HashMap();
10 //TreeMap map = new TreeMap(); //sorted
11 Employee1 emp;
12 for (int i = 0; i <3; i++) {
13 emp=new Employee1();
14 System.out.println("Enter name:");
15 String name=reader.next();
16 System.out.println("Enter address:");
17 String addr=reader.next();
18 System.out.println("Enter dateJoined(YY/mm/):");
19 String dateJoined=reader.next();
20 System.out.println("Enter dateBirth:");
21 String dateBirth=reader.next();
22 System.out.println("Enter basicPay:");
23 double basicPay=reader.nextDouble();
24
25 emp.setEmpName(name);
26 emp.setAddr(addr);
27 emp.setDateJoined(dateJoined);
28 emp.setBasicPay(basicPay);;
29 emp.setDateBirth(dateBirth);;
30 map.put(genEmpID(dateJoined), emp);
31
32 }
33
34 System.out.println(" EmpId EmpName Address DateJoined DateBirth BasicPay");
35
36 Object[] key_arr = map.keySet().toArray();
37 Arrays.sort(key_arr);
38 for (Object key : key_arr) {
39 Employee1 em = (Employee1) map.get(key);
40 System.out.println(key+"\t"+em.getEmpName()+"\t"+em.getAddr()+"\t"+em.getDateJoined()+"\t"+em.getDateBirth()+"\t"+em.getBasicPay());
41
42 }
43
44 /*Set<Integer> set = map.keySet();
45 Iterator<Integer> iter = set.iterator();
46 while(iter.hasNext()){
47 int key = iter.next();
48 Employee1 em=(Employee1) map.get(key);
49 System.out.println(key+"\t"+em.getEmpName()+"\t"+em.getAddr()+"\t"+em.getDateJoined()+"\t"+em.getDateBirth()+"\t"+em.getBasicPay());
50 }*/
51
52 }
53
54
55
56
57
58
59 public static int genEmpID(String dateJoined){
60 String EmpID=dateJoined+(EmId+1);
61 EmId++;
62 String [] s=EmpID.split("/");
63 StringBuffer bs=new StringBuffer();
64 for(int i=0;i<s.length;i++){
65 bs.append(s[i]);
66 }
67 int ID=Integer.parseInt(bs.toString());
68 return ID;
69
70 }
71
72 }
73
74
75
76
77
78 class Employee1 {
79 private String empName;
80 private String addr;
81 private String dateJoined;
82 private String dateBirth;
83 private double basicPay;
84
85 public String getEmpName() {
86 return empName;
87 }
88 public void setEmpName(String empName) {
89 this.empName = empName;
90 }
91 public String getAddr() {
92 return addr;
93 }
94 public void setAddr(String addr) {
95 this.addr = addr;
96 }
97 public String getDateJoined() {
98 return dateJoined;
99 }
100 public void setDateJoined(String dateJoined) {
101 this.dateJoined = dateJoined;
102 }
103 public String getDateBirth() {
104 return dateBirth;
105 }
106 public void setDateBirth(String dateBirth) {
107 this.dateBirth = dateBirth;
108 }
109 public double getBasicPay() {
110 return basicPay;
111 }
112 public void setBasicPay(double basicPay) {
113 this.basicPay = basicPay;
114 }
115
116
117
118
119 }
