Java Collections emptySortedMap() Method with Examples

by Online Tutorials Library July 22, 2022

Java Collections emptySortedMap() Method

The emptySortedMap() method of Java Collections class returns an empty sorted map which is immutable.

Syntax

Following is the declaration of emptySortedMap() method:

Parameter

This method does not accept any parameter.

Returns

The emptySortedMap() method returns an empty immutable Sorted Map.

Exceptions

Compatibility Version

Java 1.8 and above

Example 1

  import java.util.*;  public class CollectionsEmptySortedMapExample1 {  public static void main(String[] args) {       SortedMap EmpSortedMap = Collections.emptySortedMap();       System.out.println(“Created Empty Sorted Map: “+EmpSortedMap);       }    }  ,string>

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Output:

Created Empty Sorted Map: {}

Example 2

  import java.util.*;  public class CollectionsEmptySortedMapExample2 {  public static void main(String[] args) {       SortedMap EmpSortedMap = Collections.emptySortedMap();       System.out.println(“Created Empty Sorted Map: “+EmpSortedMap);       // try to add elements       EmpSortedMap.put(“1″,”from tutoraspire.com”);       }    }  ,string>

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Output:

Created Empty Sorted Map: {}  Exception in thread "main" java.lang.UnsupportedOperationException  at java.base/java.util.Collections$UnmodifiableMap.put(Collections.java:1453)  at myPackage.CollectionsEmptySortedMapExample2.main(CollectionsEmptySortedMapExample2.java:9)

Example 3

  import java.util.*;  public class CollectionsEmptySortedMapExample3 {  public static void main(String[] args) {  //Create an empty Map          SortedMap empSortedMap = Collections.emptySortedMap();        empSortedMap.put(1, 23424);        empSortedMap.put(2, 65776);            System.out.println(“Created empty immutable Sorted Map: “+empSortedMap);             }    }  ,>

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Output:

Exception in thread "main" java.lang.UnsupportedOperationException  at java.base/java.util.Collections$UnmodifiableMap.put(Collections.java:1453)  at myPackage.CollectionsEmptySortedMapExample3.main(CollectionsEmptySortedMapExample3.java:8)

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Java Collections emptySortedMap() Method with Examples

Java Collections emptySortedMap() Method

Syntax

Parameter

Returns

Exceptions

Compatibility Version

Example 1

Example 2

Example 3

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