Warning: Writing files, as with BufferedWriter, causes many errors. Exceptions Java program that writes after close import java.
Use FileOutputStream to write binary data. No newline is inserted afterwards. Use PrintWriter is used to write formatted text. It specifies a newline after each String. With BufferedWriter we are not limited to Strings.
As it buffers before writing, so it result in less IO operations, so it improve the performance. Java program that writes String array to file import java.
First example. So we write an array to lines in a file.
It can write just a part of a string—a substring specified with a start index and length.