写一个方法,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
2023-06-30
答:代码如下:
public int countWords(String file, String find) throws Exception
int count = 0;
Reader in = new FileReader(file);
int c;
while ((c = in.read()) != -1)
while (c == find.charAt(0))
for (int i = 1; i < find.length(); i++)
c = in.read();
if (c != find.charAt(i)) break;
if (i == find.length() – 1) count++;
return count;