Java Collections checkedNavigableSet() Method with Examples

by Online Tutorials Library July 22, 2022

Java Collections checkedNavigableSet() Method

The checkedNavigableSet() is an inbuilt method of Java Collections class. This method is used to get a dynamically typesafe view of the specified Navigable Set. If any attempt of inserting an element whose value has the wrong type, it will through an immediate ClassCastException.

Syntax

Following is the declaration of checkedNavigableSet() method:

  public static <E> NavigableSet<E> checkedNavigableSet(NavigableSet<E> s, Class<E> type)  

Parameter

Parameter	Description	Required/Optional
s	It is the navigable set for which a dynamically typesafe view is to be returned.	Required
type	It is the type of element that s is permitted to hold.	Required

Returns

The checkedNavigableSet() method returns a dynamically typesafe view of the specified Navigable Set.

Exceptions

ClassCastException

Compatibility Version

Java 1.8 and above

Example 1

  import java.util.*;  public class CollectionsCheckedNavigableSetExample1 {  public static void main(String[] args) {    NavigableSet set = new TreeSet<>();    //Insert values in the Map    set.add(“A1”);    set.add(“B2”);    set.add(“C3”);    set.add(“D4”);          //Create type safe view of the Set                  System.out.println(“Type safe view of the Navigable Set is: “+Collections.checkedNavigableSet(set,String.class));          }  }  

Test it Now

Output:

Type safe view of the Navigable Set is: [A1, B2, C3, D4]

Example 2

  import java.util.*;  public class CollectionsCheckedNavigableSetExample2 {  public static void main(String[] args) {  NavigableSet set = new TreeSet<>();  //Insert values in the Map  set.add(11);  set.add(22);  set.add(33);  set.add(44);        //Create type safe view of the Set    NavigableSet TypeSafeSet;  TypeSafeSet = Collections.checkedNavigableSet(set,Integer.class);        System.out.println(“The view of the Navigable Set is: “+TypeSafeSet);        }  }  

Test it Now

Output:

The view of the Navigable Set is: [11, 22, 33, 44]

Example 3

  import java.util.*;  public class CollectionsCheckedNavigableSetExample3 {  public static void main(String[] args) {      NavigableSet set = new TreeSet<>();      //Insert values in the Map      set.add(“A”);      set.add(“B”);      set.add(“A”);      set.add(“B”);      System.out.println(“Type safe view of the Navigable Set1 is: “+Collections.checkedNavigableSet(set,String.class));      NavigableSet sset = new TreeSet<>();      sset.add(11);      sset.add(12);      sset.add(11);      sset.add(12);      //Create type safe view of the Map              System.out.println(“Type safe view of the Navigable Set2 is: “+Collections.checkedNavigableSet(sset,Integer.class));       Set sset2 = sset;            sset2.add(“two”);            System.out.println(“TypeSafe View: “+sset2);      }  }  

Test it Now

Output:

Type safe view of the Navigable Set1 is: [A, B]  Type safe view of the Navigable Set2 is: [11, 12]  Exception in thread "main" java.lang.ClassCastException: java.base/java.lang.Integer cannot be cast to java.base/java.lang.String  at java.base/java.lang.String.compareTo(String.java:124)  at java.base/java.util.TreeMap.put(TreeMap.java:566)  at java.base/java.util.TreeSet.add(TreeSet.java:255)  at myPackage.CollectionCheckedNavigableSetExample3.main(CollectionCheckedNavigableSetExample3.java:21)

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Java Collections checkedNavigableSet() Method with Examples

Java Collections checkedNavigableSet() Method

Syntax

Parameter

Returns

Exceptions

Compatibility Version

Example 1

Example 2

Example 3

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