[IT科技] 创建一个文件，并将其设置为只读(File,setWritable)

 
package code.jdk.io;
import java.io.File;
import java.io.IOException;
public class FileAttributesDemo {
  public static void main(String[] args) throws IOException {
    // Create a new file, by default canWrite=true, readonly=false
    File file = new File("test.txt");
    if (file.exists()) {
      file.delete();
    }
    file.createNewFile();
    System.out.println("Before. canWrite?" + file.canWrite());
    // set to read-only, atau canWrite = false */
    file.setWritable(false);
    System.out.println("After. canWrite?" + file.canWrite());
  }
}