what is the difference between null != object and object!=null [duplicate]

by

The first two are equivalent, but the “null != object” is an old practice from languages where it is valid to write “if (object = null)” and accidentally assign null to the object. It is a guard to stop this accident from happening.

The second whilst equivalent has the added advantage that if “something” is null you will not get a null reference exception whereas you would if you did: something”.equals(“”).

More Related Contents:

  1. Why is my app is crashing while using async task?
  2. Firebase Android ListView not being displayed
  3. Why are my fields initialized to null or to the default value of zero when I’ve declared and initialized them in my class’ constructor?
  4. Why does the JTable header not appear in the image?
  5. What is the backslash character (\\)?
  6. How can I interrupt a ServerSocket accept() method?
  7. What is the difference between ‘java’, ‘javaw’, and ‘javaws’?
  8. Debug a java application without starting the JVM with debug arguments
  9. In Java 8, is there a ByteStream class?
  10. Prevent Android activity dialog from closing on outside touch
  11. Get the metadata of a file
  12. Creating a custom JButton in Java
  13. Add JLabel with image to JList to show all the images
  14. Updating .class file in jar
  15. Java: Class.this
  16. How to create a Java / Maven project that works in Visual Studio Code?
  17. How to get access to job parameters from ItemReader, in Spring Batch?
  18. What is the best way to generate a unique and short file name in Java
  19. Hibernate HQL Query : How to set a Collection as a named parameter of a Query?
  20. Spring Boot, logback and logging.config property
  21. How to get annotation class name, attribute values using reflection
  22. how to inherit Constructor from super class to sub class
  23. How to create JList with icon and text?
  24. Is this raw type assignment type-safe? List = new ArrayList();
  25. How to suspend a java thread for a small period of time, like 100 nanoseconds?
  26. How do I set the position of the mouse in Java?
  27. Java 8’s orElse not working as expected
  28. calculate number of weeks in a given year
  29. Clicking on a drawn object
  30. Tomcat – CATALINA_BASE and CATALINA_HOME variables

Leave a Comment