public class substring {
public static void main(String[] av) {
String a = "Java is great.";
System.out.println(a);
String b= a.substring(5);
System.out.println(b);
String c = a.substring(5,7);
System.out.println(c);
String d = a.substring(5);
System.out.println(d);
// TODO 自动生成的方法存根
}
}