个人项目

 1 /**
 2  * 模块：获取文件词数
 3  */
 4 public class GetWord {
 5     ReadFile rf = new ReadFile();
 6     public void getWordNum(String path,String fileName) throws IOException {
 7         String content = rf.readFile(path,fileName);
 8         if (content != null) {
 9             //将全部非字母字符替换为空格，便于分割统计
10             String temp = content.replaceAll("[^a-zA-Z]", " ");
11             String[] words = temp.split(" +");
12             if (words.length == 1 && words[0].equals("")) {
13                 System.out.println("词数：0");
14             }
15             System.out.printf("词数：%d\n\n",words.length - 1);
16         }
17     }
18 }

 1 /**
 2  * 模块：获取文件行数
 3  */
 4 public class GetLine {
 5     ReadFile rf = new ReadFile();
 6     public void getLineNum(String path,String fileName) throws IOException {
 7         String content = rf.readFile(path,fileName);
 8         byte[] lines = content.getBytes();//content.split("\n");
 9         int count = 0;
10         for (int i = 0; i < lines.length; i++) {
11             if (lines[i] == ‘\n‘)
12                 count++;
13         }
14         System.out.printf("行数：%d\n\n",++count);
15     }
16 }

 1 /**
 2  * 模块：获取文件字符数(包括行内空格)
 3  */
 4 public class GetChar {
 5     ReadFile rf = new ReadFile();
 6     public void getCharNum(String path,String fileName) throws IOException {
 7             String content = rf.readFile(path,fileName);
 8             byte[] bytes = content.getBytes();
 9             int count = 0;
10         for (int i = 0; i < bytes.length; i++) {
11             if(bytes[i] != 10 && bytes[i] != 13) //去掉回车和换行符
12                 count++;
13         }
14         System.out.printf("字符数：%d\n\n",count);
15     }
16 }

 1 /**
 2  * 模块：从文件中读取内容，以字符串形式返回
 3  */
 4 public class ReadFile {
 5     public String readFile(String path,String fileName) throws IOException {
 6 
 7         try{
 8             //创建读入流
 9             File file = new File(path+fileName);
10             FileReader fileReader = new FileReader(file);
11 
12             //读取文件内容
13             String content = "";
14             int b = 0;
15             while((b = fileReader.read()) != -1){
16                 content += (char)b;
17             }
18             //关闭流
19             if(fileReader != null) fileReader.close();
20 
21             //返回文件内容
22             return content;
23         }catch(FileNotFoundException e){
24             System.out.println("File cannot be found.");
25             return null;
26         }
27     }
28 }

 1 /**
 2  * 测试类
 3  */
 4 public class Test {
 5     public static void main(String[] args) throws IOException {
 6         Scanner sc = new Scanner(System.in);
 7         GetChar gc = new GetChar();
 8         GetLine gl = new GetLine();
 9         GetWord gw = new GetWord();
10 
11         System.out.println("请输入待查询文件所属目录：");
12         String path = sc.next();
13         int count = 0;
14         while(true) {
15             System.out.println("输入命令(按“Q”退出)：");
16             if(count == 0) sc.nextLine();
17             String input = sc.nextLine();
18             if(input.equalsIgnoreCase("Q"))
19                 break;
20             String[] lines = input.split(" ");  //分割指令
21             if (!lines[0].equals("wc.exe") || !lines[1].equals("-w") && !lines[1].equals("-c") && !lines[1].equals("-l"))
22                 System.out.println("无效命令！");
23             else {
24                 if (lines[1].equals("-w")) //统计词数
25                     gw.getWordNum(path,lines[2]);
26                 if (lines[1].equals("-c")) //统计行数
27                     gc.getCharNum(path,lines[2]);
28                 if (lines[1].equals("-l")) //统计字符数
29                     gl.getLineNum(path,lines[2]);
30             }
31             count ++;
32         }
33     }
34 }