参考手册

参考手册

实例 Java 获取文件信息

​x
 
import java.io.File; 
​
public class GetFileInfo {  
  public static void main(String[] args) {  
    File myObj = new File("filename.txt");
    if (myObj.exists()) {
      System.out.println("File name: " + myObj.getName()); 
      System.out.println("Absolute path: " + myObj.getAbsolutePath()); 
      System.out.println("Writeable: " + myObj.canWrite()); 
      System.out.println("Readable: " + myObj.canRead()); 
      System.out.println("File size in bytes: " + myObj.length());
    } else {
      System.out.println("The file does not exist.");
    }
  }  
} 
​
​
                    

输出结果

Result:
File name: filename.txt
Absolute path: C:\Users\MyName\filename.txt
Writeable: true
Readable: true
File size in bytes: 0