标签：fun throws span try adl out buffere ber files
一
public static int Count(String fileName , String str) throws Exception{
//获取文件中的字符
FileReader fr = new FileReader(new File(fileName));
BufferedReader br = new BufferedReader(fr);
StringBuffer sb = new StringBuffer();
String line;
while((line = br.readLine()) != null ){
sb.append(line);
}
String filestr = sb.toString(); //文件中的字符
System.out.println(filestr);
//统计这个字符串在这个文件中出现的次数
int num = 0;
while(filestr.length() > str.length()){
int index = filestr.indexOf(str);
if(index>-1){ //存在字符串str
num++;
filestr = filestr.substring(index+str.length());
}
else{
break;
}
}
return num;
}
二：
public static int fun(File file,String s){ int count=0; String read; String readAll = ""; int i=0; try { BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file))); while((read = br.readLine())!=null){ readAll += read; } while(readAll.indexOf(s,i)!=-1){ i=readAll.indexOf(s,i)+s.length(); count++; } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return count; }写入一个方法，输入一个文件名和一个字符串，统计这个字符串在这个文件中出现的次数。
标签：fun throws span try adl out buffere ber files
原文地址：http://www.cnblogs.com/qiong2017/p/7678461.html
