Corejava-Slip3

Slip3.Write a java program to accept the details of ‘n’ employees (EName ,Salary) from the user, store them into the Hashtable and displays the Employee Names havin maximum Salary.

import java.util.*;

import java.io.*;

public class Slip3

{

public static void main(String args[])throws Exception

{

int n,sal=0;

String name="";

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

Hashtable h = new Hashtable();

System.out.println("\nEnter number of Employee : ");

n = Integer.parseInt(br.readLine());

for(int i = 1; i <= n; i++)

{

System.out.println("\nEnter name");

name = br.readLine();

System.out.println("\nEnter Salary : ");

sal=Integer.parseInt(br.readLine());

h.put(name,sal);

}

Enumeration v = h.elements(); //sal

Enumeration k = h.keys(); //name

while(k.hasMoreElements())

{

System.out.println(k.nextElement()+" "+v.nextElement());

}

int max = 0;String str="";

k = h.keys();

v = h.elements();

while(v.hasMoreElements())

{

sal=(Integer)v.nextElement();

name = (String)k.nextElement();

if(sal>max)

{

max = sal;

str = name;

}

}

System.out.println(str +" has maximum salary is "+max);

}

}

Another way

/*Title:  Write a java program to accept the details of  ‘n’ employees (EName ,Salary) from the user, 
 store them into the Hashtable and displays the Employee Names having maximum Salary. */ 
import java.util.*;
import java.io.*;
class col
  {
   public static void main(String args[])
     {
      Hashtable ht=new Hashtable();
      System.out.println();
      int n;
      while(true)
        {
         System.out.println("How many elements you wish to enter:");
         try
           {
            n=Integer.parseInt(Accept());
            if(n>0)
            break;

            else
            System.out.println("\n\tNegative number is not allowed.");
           }
         catch(Exception e)
           {
            System.out.println("\nInvalid");
           }
        }
      for(int i=0;i<n;i++)
        {
         System.out.println("\n\tEnter the name of employee:");
         String name=Accept();
         Float salary=null;
         while(true)
           {
            System.out.println("Enter the salary of the employee:");
            try
              {
               salary=new Float(Accept());
               if(salary.floatValue()>0)
               break;
       
               else
               System.out.println("\n\tNegative Salary not allowed.");
              }
            catch(Exception e)
              {
               System.out.println("Invalid.");
              }
           }
         ht.put(name,salary);
        }
      Enumeration e=ht.keys();
      if(e.hasMoreElements())
      System.out.println("\nDetails of Employees are:");
      while(e.hasMoreElements())
        {
         Object name=e.nextElement();
         Object salary=ht.get(name);
         System.out.println("\n\tName:"+name+"Salary:"+salary);
        }
      Object m=Collections.max(ht.values());
      System.out.println("\n\tThe maximum salary is:"+m);
     }
   public static String Accept()
     {
      BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
      String str=null;
      try
        {
         str=br.readLine();
        }
      catch(Exception e)
        {
        }
      return str;
     }

  }