Java properties file reading and writing

Mail required. Reading and writing files in Java. Here we see the program that we will read the file line by line and print the screen line by line the contents of the file: import java. File; import java. File writing: For writing files, we will have two ways to do this, one for writing a file without a specific encoding and another to write with a particular encoding in this case in UTF The second way is to write a file with a specific coding is presented below: import java.

BufferedWriter; import java. FileNotFoundException; import java. In java, there multiple ways to read data from a file and to write data to a file. The most commonly used ways are as follows. In java, we can use a byte stream to handle files.

The byte stream has the following built-in classes to perform various operations on a file. You can do this in many ways, but the best way is to use Java Properties syntax to save the contents of the Properties object to a user-editable text file. Your parser will just have to be smart enough to figure out how to read text from the file back into a Properties object, but it's really not that hard to do.

Bottom line is, it's most important to figure out how to break up this program into smaller pieces. You could just as easily write a bunch of monolithic code that directly saves your properties files from ActionListeners in Swing, but none of that code would be reuseable.

Break your code up into smaller objects Parser object, UI object , then focus only on those smaller pieces, one at a time, until you can get them all working together to accomplish your goal. Once you read the. For example when an entry represents a boolean value, you can use a checkbox in the UI, and update the Properties instance when the user toggles the selected state of the checkbox. Actually reading a properties file will be done is some of your method.

So its not at all depends upon Swing. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Improve Article. Save Article. Like Article. Last Updated : 29 Nov, Driver" ;. ResultSet rs. ResourceBundle rd. 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.