What is an efficient way to implement a singleton pattern in Java?

0 votes
Please help!
Jul 6, 2018 in Java by sophia
• 1,400 points
54 views

1 answer to this question.

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
0 votes

Use an enum:

public enum Foo 
{
    INSTANCE;
}

The Right Way to Implement a Serializable Singleton

public enum Elvis {
    INSTANCE;
    private final String[] favoriteSongs =
        { "Hound Dog", "Heartbreak Hotel" };
    public void printFavorites() {
        System.out.println(Arrays.toString(favoriteSongs));
    }
}
answered Jul 6, 2018 by Akrati
• 3,150 points

Related Questions In Java

0 votes
1 answer

What is the simplest way to read JSON from a URL in java

Read json from url use url.openStream() and read contents ...READ MORE

answered Jun 13, 2018 in Java by samarth295
• 2,190 points
86 views
0 votes
1 answer

What is the easiest way to iterate through the characters of a string in Java?

The below code seems the easiest to ...READ MORE

answered Jul 13, 2018 in Java by scarlett
• 1,280 points
27 views
+1 vote
1 answer

What is a simple way to repeat a string in java?

From Java 11 on, there's a method String::repeat that does ...READ MORE

answered Aug 28, 2018 in Java by Frankie
• 9,570 points
96 views
0 votes
1 answer

In Java, what is the best way to determine the size of an object?

Please check the below code to arrive ...READ MORE

answered Nov 21, 2018 in Java by Frankie
• 9,570 points
47 views
+5 votes
3 answers

How to execute a python file with few arguments in java?

You can use Java Runtime.exec() to run python script, ...READ MORE

answered Mar 27, 2018 in Java by DragonLord999
• 8,360 points

edited Nov 6, 2018 by Omkar 4,398 views
0 votes
1 answer

How to handle drop downs using Selenium WebDriver in Java

First, find an XPath which will return ...READ MORE

answered Mar 27, 2018 in Selenium by nsv999
• 5,030 points
1,195 views
0 votes
1 answer

What are the differences between getText() and getAttribute() functions in Selenium WebDriver?

See, both are used to retrieve something ...READ MORE

answered Apr 5, 2018 in Selenium by nsv999
• 5,030 points
3,449 views
0 votes
1 answer

Selenium JARS(Java) missing from downloadable link

Nothing to worry about here. In the ...READ MORE

answered Apr 5, 2018 in Selenium by nsv999
• 5,030 points
211 views
+1 vote
3 answers

How to convert a List to an Array in Java?

Either: Foo[] array = list.toArray(new Foo[list.size()]); or: Foo[] array = ...READ MORE

answered Aug 7, 2018 in Java by Akrati
• 3,150 points
33 views
0 votes
2 answers

How to create a 2-D array in java?

int[][] multi = new int[5][]; multi[0] = new ...READ MORE

answered Jul 16, 2018 in Java by Daisy
• 8,020 points
24 views

© 2018 Brain4ce Education Solutions Pvt. Ltd. All rights Reserved.
"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.