Get min and Get Max in Java

How to get min element from the given list

package com.java2novice.collections;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

public class MyMinNumber

{

public static void main(String a[])

{

        List li = new ArrayList();

        li.add(23);

        li.add(44);

        li.add(12);

        li.add(45);

        li.add(2);

        li.add(16);

        System.out.println("Minimum element from the list: "+Collections.min(li));

    }

}

How to get max element of a list of user defined objects

package com.java2novice.collections;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

public class MyMaxUDOComparable

{

 public static void main(String a[])

{

        List emps = new ArrayList();

        emps.add(new Empl(10, "Raghu", 25000));

        emps.add(new Empl(120, "Krish", 45000));

        emps.add(new Empl(210, "John", 14000));

        emps.add(new Empl(150, "Kishore", 24000));

        Empl maxSal = Collections.max(emps);

        System.out.println("Employee with max salary: "+maxSal);

    }

}

class Empl implements Comparable

{

    private int id;

    private String name;

    private Integer salary;

 public Empl(int id, String name, Integer sal)

{

        this.id = id;

        this.name = name;

        this.salary = sal;

  }

 public int getId()

 {

        return id;

    }

    public void setId(int id)

   {

        this.id = id;

    }

    public String getName()

   {

        return name;

    }

    public void setName(String name)

   {

        this.name = name;

    }

    public Integer getSalary()

   {

        return salary;

    }

    public void setSalary(Integer salary)

   {

        this.salary = salary;

    }

    public int compareTo(Empl emp)

   {

         return this.salary.compareTo(emp.getSalary());

    }

    public String toString()

   {

        return id+"  "+name+"   "+salary;

    }

}

How to get min element of a list of user defined objects

package com.java2novice.collections;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

public class MyEmpMinSalary

public static void main(String a[])

{

        List emps = new ArrayList();

        emps.add(new Empl(10, "Raghu", 25000));

        emps.add(new Empl(120, "Krish", 45000));

        emps.add(new Empl(210, "John", 14000));

        emps.add(new Empl(150, "Kishore", 24000));

        Empl minSal = Collections.min(emps);

        System.out.println("Employee with min salary: "+minSal);

    }

}

class Empl implements Comparable

{

    private int id;

    private String name;

    private Integer salary;

 public Empl(int id, String name, Integer sal)

{

        this.id = id;

        this.name = name;

        this.salary = sal;

  }

  public int getId()

  {

        return id;

   }

   public void setId(int id)

   {

        this.id = id;

    }

    public String getName()

    {

        return name;

    }

    public void setName(String name)

   {

        this.name = name;

    }

    public Integer getSalary()

   {

        return salary;

    }

    public void setSalary(Integer salary)

    {

        this.salary = salary;

    }

    public int compareTo(Empl emp)

    {

        return this.salary.compareTo(emp.getSalary());

    }

    public String toString()

   {

        return id+"  "+name+"   "+salary;

    }

}