运用JAVA读取txt文件

package com.b;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

/**
* @author dengshaohua
*/
public class Utils {

/**
* 读取数据
*/
public String ReadDate() {
String url = "c:/data.txt";
String strs = "";
try {
FileReader read = new FileReader(new File(url));
StringBuffer sb = new StringBuffer();
char ch[] = new char[1024];
int d = read.read(ch);
while(d!=-1){
String str = new String(ch,0,d);
sb.append(str);
d = read.read(ch);
}
System.out.print(sb.toString());
String a = sb.toString().replaceAll("@@@@@", ",");
strs = a.substring(0,a.length()-1);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return strs ;
}

public static void main(String a[])
{
Utils util = new Utils();
String cc = util.ReadDate();
System.out.println("result...."+cc);
}

}