How to make a file read only in Java
A Java program to demonstrate the use of java.io.File setReadOnly() method to make a file read only. Since JDK 1.6, a new setWritable() method is provided to make a file to be writable again.
Example
package com.mkyong;
import java.io.File;
import java.io.IOException;
public class FileReadAttribute
{
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");
}
}
}
Output
This file is read only
This file is writable
Hi, I´d like to know if there is a way to make a PDF file visible on the Internet, but not downloadable, not copyable and not printable…using Java or someother similar language…..