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copied!<p>Try below code </p> <p>Create an <code>ENUM</code></p> <pre><code>package com.rais; public enum Severity { HIGH("H"), MEDIUM("M"), LOW("L"); private final String value; private Severity(String value) { this.value = value; } } </code></pre> <p>Now Create <code>Person</code> class according to your requirement eg.</p> <pre><code>package com.rais; public class Person { private Severity severity; private String name; public Person(Severity severity, String name) { super(); this.severity = severity; this.name = name; } public Severity getSeverity() { return severity; } public void setSeverity(Severity severity) { this.severity = severity; } public String getName() { return name; } public void setName(String name) { this.name = name; } } </code></pre> <p>Finally create a Test Client and apply below logic. </p> <pre><code>package com.rais; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; public class TestClient { public static void main(String[] args) { Person one = new Person(Severity.HIGH, "shayam"); Person two = new Person(Severity.MEDIUM, "mohan"); Person three = new Person(Severity.LOW, "radha"); Person four = new Person(Severity.HIGH, "rakesh"); Person five = new Person(Severity.MEDIUM, "kailash"); Person six = new Person(Severity.LOW, "rais"); Person seven = new Person(Severity.LOW, "abhishek"); List<Person> persons = new ArrayList<Person>(); persons.add(one); persons.add(two); persons.add(three); persons.add(four); persons.add(five); persons.add(six); persons.add(seven); Collections.sort(persons, new Comparator<Person>() { @Override public int compare(Person person1, Person person2) { if(person1.getSeverity()==person2.getSeverity()) { return person1.getName().compareTo(person2.getName()); } else{ return person1.getSeverity().compareTo(person2.getSeverity()); } } }); for (Person person : persons) { System.out.println(person.getName()+" "+ person.getSeverity()); } } } </code></pre> <p>I am sure you will get below output. </p> <pre><code>rakesh HIGH shayam HIGH kailash MEDIUM mohan MEDIUM abhishek LOW radha LOW rais LOW </code></pre>

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