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Java Program to change a file attribute to writable
Let’s say our file is “input.txt”, which is set read-only −
File myFile = new File("input.txt");
myFile.createNewFile();
myFile.setReadOnly();Now, set the above file to writable −
myFile.setWritable(true);
After that, you can use canWrite() to check whether the file is writable or not.
Example
import java.io.File;
public class Demo {
public static void main(String[] args) throws Exception {
File myFile = new File("input.txt");
myFile.createNewFile();
myFile.setReadOnly();
if (myFile.canWrite()) {
System.out.println("Writable!");
} else {
System.out.println("Read only mode!");
}
// set file to writable
myFile.setWritable(true);
if (myFile.canWrite()) {
System.out.println("Writable!");
} else {
System.out.println("Read only mode!");
}
}
}Output
Read only mode! Writable!
Updated on: 30-Jul-2019
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