Question

java中的The method canExecute() is undefined for the type File 为什么有这个错误啊

import java.io.File;
public class GetFileInfo {
/**
* @param args
*/
public static void main(String[] args) {
String filePath="hello.txt";
File file=new File(filePath);
System.out.println("name:"+file.getName());
System.out.println("name:"+file.exists());
System.out.println("name:"+file.getPath());
System.out.println("name:"+file.getAbsolutePath());
System.out.println("name:"+file.canExecute());
System.out.println("name:"+file.canRead());
System.out.println("name:"+file.canWrite());
// TODO Auto-generated method stub
}
}

Answer 1

是不是你的jdk版本不是1.6或以上的，

boolean java.io.File.canExecute()
Tests whether the application can execute the file denoted by this abstract pathname.
Returns:
true if and only if the abstract pathname exists and the application is allowed to execute the file
Throws:
SecurityException
- If a security manager exists and its java.lang.SecurityManager.checkExec(java.lang.String)
method denies execute access to the file
Since:
1.6

Answer 2

是你编译器版本的问题吧，这个方法是1.6以后才有的，1.5 木有