ArrayIndexOutOfBoundsException

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 3 下标超出范围了, p288   at e16_01.Example_01.(Example_01.java:18)  at e16_01.Main_01.main(Main_01.java:8)

package e16_01;

public class Example_01 {
String s;
int i,i2,i3;
private Example_01(){
}
protected Example_01(String s,int i){
		this.s=s;
		this.i=i;
	}
public Example_01(String... strings)throws NumberFormatException{
		if(0