ตัวอย่าง
package demo.file; import java.io.File; public class FileReadOnlyExample { /** * @param args */ public static void main(String[] args) { File file = new File("C:\\users\\nopphanan7\\newfile.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"); } } }ผลลัพธ์ที่ได้คือ
This file is read only This file is writable
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