Javatpoint Logo
Javatpoint Logo

Java Collections singletonList() Method

The singletonList() method of Java Collections class is used to get an immutable list which contains only the specified object.

Syntax

Following is the declaration of singletonList() method:

Parameter

Parameter Description Required/Optional
o It is the object which will be stored in the returned List. Required

Returns

The singletonList() method returns an immutable List which contains only the specified object.

Exceptions

NA

Compatibility Version

Java 1.3 and above

Example 1

Test it Now

Output:

Number List elements: [10]
String List elements: [Hello India]

Example 2

Test it Now

Output:

List value before: [One, Two, Three, One, Two, Three, JavaTpoint]
List value after: [One]

Example 3

Test it Now

Output:

1.	Enter the value: 55
Output: [55]
2.	Enter the value: Java
Exception in thread "main" java.util.InputMismatchException
	at java.base/java.util.Scanner.throwFor(Scanner.java:939)
	at java.base/java.util.Scanner.next(Scanner.java:1594)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
at myPackage.CollectionsSingletonListExample3.main(CollectionsSingletonListExample3.java:7)





Please Share

facebook twitter google plus pinterest

Learn Latest Tutorials


Preparation


Trending Technologies


B.Tech / MCA