How do you create a File in Java?

Answer 1

There are a number of ways to create a file in java. The following example demonstrates a few:

import java.io.*;

import java.nio.charset.*;

public class Main {

public static void main(String[] args) {

try {

// Simplest way

PrintWriter out1 = new PrintWriter("file1.txt");

out1.println("hello file1!");

out1.close();

// Append to existing file if it already exists

PrintWriter out2 = new PrintWriter(new FileWriter("file2.txt", true));

out2.println("hello file2!");

out2.close();

// If non-default charset is needed

Charset charset = Charset.forName("UTF-16");

PrintWriter out3 = new PrintWriter(new OutputStreamWriter(new FileOutputStream("file3.txt"), charset));

out3.println("hello file3!");

out3.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

Answer 2

1. create java file.

2. create main program

3. use File class to create file object

4. read javadoc for exact method and classes in Java or use IDE like Netbeans and Eclipse

Answer 3

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