Method 2: Using FileWriter Class If the content of the file is short, then using the FileWriter class to write in the file is another better option. It also writes the stream of characters as the content of the file like writeString method. The constructor of this class defines the default character encoding and the default buffer size in bytes.
Example The following example shows the use of the FileWriter class to write content into a file. It requires to create the object of the FileWriter class with the filename to write into a file. Next, the write method is used to write the value of the text variable in the file. If any error occurs at the time of writing the file, then an IOexception will be thrown, and the error message will be printed from the catch block.
FileWriter; import java. It has a default buffer size, but the large buffer size can be assigned. It is useful for writing characters, strings, and arrays. It is better to wrap this class with any writer class for writing data to a file if no prompt output is required. BufferedWriter; import java. The following example shows the use of BufferedWriter class to write into a file. It also requires to create the object of BufferedWriter class like FileWriter to write content into the file.
But this class supports large content to write into the file by using a large buffer size. FileWriter and BufferedWriter classes are used to write only the text to a file, but the binary data can be written by using the FileOutputStream class.
To write data into a file using FileOutputStream class is shown in the following example. It also requires to create the object of the class with the filename to write data into a file. Here, the string content is converted into the byte array that is written into the file by using the write method. FileOutputStream; import java. 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.
Skip to content. Change Language. Related Articles. Improve Article. Note that if the file is already locked when we try to acquire the lock, an OverlappingFileLockException will be thrown. Looking at the common usage practices, we can see, for example, that PrintWriter is used to write formatted text, FileOutputStream to write binary data, DataOutputStream to write primitive data types, RandomAccessFile to write to a specific position, and FileChannel to write faster in larger files.
Some of the APIs of these classes do allow more, but this is a good place to start. List of Contents 1. Overview 2. Write With BufferedWriter 3. Write With PrintWriter 4. Write With FileOutputStream 5. Write With DataOutputStream 6. Write With RandomAccessFile 7.
Write With FileChannel 8. Write With Files Class 9. Write to a Temporary File Lock File Before Writing Notes Related posts:. Deploy a Spring Boot App to Azure. Introduction to Spring Method Security.
Popular Examples Check prime number. Next Java append to file. Can you show the way. If you want to write course today. February 6, at pm. Comments Steve Waring says:. Hello, Can we store real with you personally. Find the standard deviation. Get certified by completing a. In the following example, we use the FileWriter class together with its write method to write some text to the file we created in the be created for some reason.To create a file in Java, you can use the createNewFile() method. This method returns a boolean value: The output will be: File created: anarn.lifemataz.com Note how we're not only writing a raw String to a file, but also some formatted text with the printf method. We can create the writer using. Java FileWriter Class Java FileWriter class is used to write character-oriented data to a file. It is character-oriented class which is used for file handling.