通過java可以修改檔案為只讀許可權

package com.zuidaima.util.file;

import java.io.File;
import java.io.IOException;

/**
 * 修改檔案為只讀許可權
 * 
 * @author javaniu
 * 
 */
public class MakeFileReadOnly {
	public static void main(String[] args) throws IOException {
		File file = new File("c:/file.txt");

		// mark this file as read only, since jdk 1.2
		file.setReadOnly();

		if (file.canWrite()) {
			System.out.println("This file is writable");
		} else {
			System.out.println("This file is read only");
		}

		// revert the operation, mark this file as writable, since jdk 1.6
		file.setWritable(true);

		if (file.canWrite()) {
			System.out.println("This file is writable");
		} else {
			System.out.println("This file is read only");
		}
	}
}