How to change a file attribute to read only in java?

Below java code shows how to change file attribute to read only –

 * Created on 03-2012 Copyright(c) All Rights Reserved.
package com.kodehelp.javaio;


 * Created by
 * Date: 03/05/2012
public class ReadOnlyFileAttribute {
	public static void main(String[] args) throws IOException {
		File file = new File("sample.log");
        file.setReadOnly(); // Setting file attribute to Read only

        if (file.canWrite())
            System.out.println("Writable File!");
        } else
            System.out.println("Read only file");

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