public class StringTest {
/**
* 怎么截取24,122，怎么截取某个特定字符前面的数据，且特定字符后面的有规律
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String a = "24.12";
String b = "122.12";
System.out.println(a.substring(0, a.indexOf(".")));
}
}