Why override tostring method in java

Angular 7. Machine Learning. Data Structures. Operating System. Computer Network. Compiler Design. Computer Organization. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Cyber Security. C Programming. Control System. Include inherited members if you think they provide must-have information in child class. Sometimes an object contains many optional and mandatory parameters like we shown in our Builder pattern example , when it's not practically possible to print all fields in those cases printing meaningful information, not necessary fields is better.

If you look at above output you find that NetBeans does not generated formatted Date for you, instead it calls toString method of java. Date class. By default Eclipse generates following toString method :. It also provides several options like choosing code style e. Here is the output of toString method we just created by Eclipse :. Multi-line style: test. When toString method is invoked in Java? If subclass doesn't override toString method than default implementation defined in Object class gets invoked.

Logger to print logs and often pass Objects there. This way its always good to override toString in Java. Benefits of overriding toString method:. One of the classic examples of not overriding the toString method is Array in Java, which prints default implementation rather than contents of an array. Though there are a couple of ways to print contents of an array using Arrays. These are just some of the benefits you get by implementing or overriding the toString method in Java , there are many more which you get and learn by yourself.

I hope these tips will help you to get most of your toString implementation. Let us know if you have any unique toString tips that have helped you in your Java application. Other Java String articles from Javarevisited Blog.

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Labels: core java , java tips , programming. June 23, at PM Anonymous said February 10, at AM Anonymous said July 30, at AM.

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Difference between Process and Thread in Java - Ex Spring Transactional Annotation Example - How to How to create thread safe Singleton in Java - Java Balaji February 17, pm. Thanks Balaji, I am glad that it is helping you…. Mangesh Kulkarni May 28, pm. Thanks for exploring knowledge about java from the birth of each concept. Helen July 1, am. Thanks a lot for you brief explanation and examples. Devendra August 20, am. Thank for information. God bless you. Thanks Again. Rajagopal August 26, am.

Rajesh February 8, am. Sir, This information very useful. You tried to explain new Programming Technology concepts also. Shiv September 14, am. Jeetin May 3, am. The way u convey topics is just awesome.