Java I/O 02. The PrintWriter class - writing to a file
This video is about the PrintWriter class, which is used to print to a file.
The following code may have been modified to meet Youtube's guidelines. Please go to • Java I/O 00. Input/Output Basics Setup to download the actual file
/**
The PrintWriter class:
To write to a file, use the PrintWriter class
Contains pretty much all the methods that System.out has.
**/
import java.io.File;
import java.io.PrintWriter;
public class PrintWriterClass {
public static void main(String[] args) throws Exception {
File testFile = new File("printWriterTest.txt");
if (testFile.exists()) {
System.err.println("File exists");
System.exit(1);
}
PrintWriter out = new PrintWriter(testFile);
// print Strings
out.print("Hello World!");
out.println();
out.println("Hello world, it's me again.");
// print ints, doubles, booleans
out.println(13);
out.println(13.4);
out.println(true);
// flush out the buffer
out.close();
}
}