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

by

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends.

Collections.max() method will returns the maximum element of the given collection, according to the natural ordering of its elements.
Syntax:public static int max(Collection coll)

Example

package com.w3schools;
 
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
 
class Employee implements Comparable<Employee>{    
    private String name;
    private Integer salary;
 
    public Employee(String name, int salary){
        this.name = name;
        this.salary = salary;
    }
 
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getSalary() {
        return salary;
    }
    public void setSalary(int salary) {
        this.salary = salary;
    }
    public String toString(){
        return "Name: "+this.name+", Salary: "+this.salary;
    }
    @Override
    public int compareTo(Employee emp) {
    	return this.salary.compareTo(emp.getSalary());
    }
}
 
 
public class Test {
        public static void main(String args[]){
        List<Employee> list = new ArrayList<Employee>();
        list.add(new Employee("Jai",50000));
        list.add(new Employee("Mahesh",80000));
        list.add(new Employee("Vishal",60000));
        list.add(new Employee("Hemant",64000));
        Employee employee=Collections.max(list);
        System.out.println("Employee with max salary: "+employee);
        }
}

Output

Employee with max salary: Name: Mahesh, Salary: 80000

Java Collections class examples