fileinfo.java

提供了常用的JAVA技术的示例

package FileInfo;

import java.io.*;

public class FileInfo {
  File fileToCheck;
  public static void main(String args[])throws IOException {
    if (args.length>0){
      for(int i=0;i<args.length;i++){
        File fileToCheck=new File(args[i]);
        info(fileToCheck);
      }
    }
    else {
      System.out.println("no file.");
    }
  }

  public static void info(File f)throws IOException{
      System.out.println("name: "+f.getName());
      System.out.println("path: "+f.getAbsolutePath());
      if (f.exists()){
          System.out.println("file exists.");
          System.out.println((f.canRead() ?"and is readable":""));
          System.out.println((f.canWrite() ?"and is writeable":""));
          System.out.println(".");
          System.out.println("file is "+f.length()+" bytes.");
      }
      else{
          System.out.println("file is not exist.");
      }
  }
}