例子
以下示例显示java.io.File.setReadable(boolean可读)方法的用法。
package com.jc2182;
import java.io.File;
public class FileDemo {
public static void main(String[] args) {
File f = null;
boolean bool = false;
try {
// create new File object
f = new File("C:/test.txt");
// returns true if file exists
bool = f.exists();
// if file exists
if(bool) {
// set read permission
bool = f.setReadable(true);
// print
System.out.println("setReadable() succeeded?: "+bool);
// checks whether the file is readable
bool = f.canRead();
// prints
System.out.print("Is file readable?: "+bool);
}
} catch(Exception e) {
// if any error occurs
e.printStackTrace();
}
}
}
让我们编译并运行以上程序,这将产生以下结果-
setReadable() succeeded?: true
Is file readable?: true