编号从0开始(经过实测)
package equal;
public class Sub {
public static void main(String args[]){
String str = "0123456789";
String str1 = str.substring(1,5);
String str2 = str.substring(0,5);
System.out.println("str1:"+str1);
System.out.println("str2:"+str2);
}
}
str1:1234
str2:01234