java --NIO and Interfaces

1.建立文件或目录

 1 import java.nio.file.Files;
 2 import java.nio.file.Path;
 3 import java.nio.file.Paths;
 4 import java.nio.file.attribute.FileAttribute;
 5 import java.nio.file.attribute.PosixFilePermission;
 6 import java.nio.file.attribute.PosixFilePermissions;
 7 import java.util.Set;
 8 
 9 public class FileDemo {
10     public static void main(String args[]) {
11         Path p=Paths.get("G:\\学习型文档\\java_test\\Myfile.txt");
12         //创建泛型集合
13     //Set<PosixFilePermission> perms=PosixFilePermissions.fromString("rw-rw-rw-");
14     //ileAttribute <Set<PosixFilePermission>> attr=PosixFilePermissions.asFileAttribute(perms);
15         
16         try {
17             Files.createFile(p);    
18         }
19         catch(Exception e) {
20             System.out.println("文件已经存在！");
21         }
22         
23         
24     }
25 }

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2.复制文件或目录