Appending to a file in java example

Before we append text to an existing file, we assume we have a file named test. In the above program, we use System 's user. Check Java Program to get the current directory for more information. Likewise, the text to be added is stored in the variable text.

Then, inside a try-catch block we use Files ' write method to append text to the existing file. The write method takes the path of the given file, the text to the written, and how the file should be open for writing. Since the write method may return an IOException , we use a try-catch block to catch the exception properly. In the above program, instead of using write method, we use an instance object FileWriter to append text to an existing file.

When creating a FileWriter object, we pass the path of the file and true as the second parameter. Then, we use write method to append the given text and close the filewriter. Course Index Explore Programiz.

Java for Loop. Follow Author. Comments A. Tourist says:. November 21, at pm. June 16, at am. FileUtils ;. Java Jaxb marshal to String 13 Feb, Java 5 ways to convert Inputstream to String in Java 9 Dec, Java No main manifest attribute, in jar 21 Mar, Java 4 ways to delete folder recursively in Java 11 Apr, FileWriter ; import java.

IOException ; import java. Files ; import java. Paths ; import java. Active Oldest Votes. Welcome to StackOverflow! You are doing new Formatter "sarit. String if the file exists then it will be truncated to zero size you need to append to file. Improve this answer. Bartosz Bilicki Bartosz Bilicki Assuming you're using java. If you want to use formatting, use String.