Code for writing data to file in java

String text. Output File is created successfully with the content. Attention reader! Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready.

Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment? Please use ide. Load Comments. What's New. Most popular in Java. Most visited in Java Programs. We use cookies to ensure you have the best browsing experience on our website. If such things happen, we say that an exception has occurred. If an exception occurs in a method, then the method should either handle the exception or throw it for the calling environment to handle.

In next chapter you will learn all about exceptions, but for now, we will simply allow our methods to throw any exceptions that might occur. For example our main method should look like this :. When above program is compiled and run output is stored in text file oceans.

The following figure shows the contents of the file displayed in Notepad. Remember that if a file that you are opening with the PrintWriter object with the name already exists in the directory it will be deleted and a new empty file with the same name is created. It's often useful to be able to append data to an existing file rather than overwriting it.

To append data in an existing file you can use FileWriter class. This can result in a significant performance increase if you're dealing with many IO requests or lots of data. In the previous sections, we have discussed the different APIs provided by Java and now it's time to use these API classes in some code.

The example code below handles reading and writing text files using the various classes we detailed above. To simplify things, and provide a better comparison of the actual methods being used, the input and output are going to remain the same between the examples. Note : To avoid any confusion on the file path, the example code will read and write from a file on in user's home directory. The user's home directory can be found using System. Check out our hands-on, practical guide to learning Git, with best-practices, industry-accepted standards, and included cheat sheet.

Stop Googling Git commands and actually learn it! Both classes accept a String, representing the path to the file in their constructors.

You can also pass a File object as well as a FileDescriptor. The write method writes a valid character sequence - either a String , a char[].