包java.nio.file不存在但安装了Java SDK / JRE 7

时间:2013-11-07 13:49:44

标签: java

我正在尝试为我正在进行的项目创建的程序遇到障碍。目前,我需要在本地目录中搜索文件,我看到SDK 7引入了更好的方法来搜索java.nio.File和PathMatcher。不幸的是,我遇到了问题。我设置了一个简单的代码,看看我是否可以为用户输入的任意字符串设置PathMatcher(当然,格式为GLOB)。它如下:

 import java.io.*;
 import java.nio.file.*;
 import java.nio.file.attribute.*;
 import static java.nio.file.FileVisitResult.*;
 import java.io.IOException;
 import java.util.*;
 import java.nio.file.*;

 public class test4{

 public static void main(String[] args)
 {
 String pattern = args[0];
 PathMatcher matcher = FileSystems.getDefault().getPathMatcher("glob:" + pattern);
 }
}

这将返回以下编译时错误:

File: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java  [line: 2]
Error: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java:2: package java.nio.file does not exist

File: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java  [line: 3]
Error: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java:3: package java.nio.file.attribute does not exist

File: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java  [line: 4]
Error: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java:4: package java.nio.file does not exist

File: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java  [line: 7]
Error: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java:7: package java.nio.file does not exist

File: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java  [line: 13]
Error: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java:13: cannot find symbol
symbol  : class PathMatcher
location: class test4

File: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java  [line: 13]
Error: /Users/xenosphobos/Documents/Thesis/ThesisJava/test4.java:13: cannot find symbol
symbol  : variable FileSystems
location: class test4

我目前正在运行MAC OSX 10.8.4并安装了SDK 7.45。我使用IDE DrJava(我知道,Eclipse更好)。

当我运行java -version时,我得到: java版“1.7.0_45” Java(TM)SE运行时环境(版本1.7.0_45-b18) Java HotSpot(TM)64位服务器VM(内置24.45-b08,混合模式)

我不明白我在这里做错了什么。它可能是我的IDE吗? Mac OSX有问题吗?我想我可以使用Java 6的方式进行文件搜索,但这似乎更容易。谢谢大家的帮助!

0 个答案:

没有答案