import java.util.Iterator;
public class app {
public static void main(String[] args) {
ArrayList list=new ArrayList<>();
for(int i=1;i<=100;i++){
list.add(i);
}
Iterator it=list.iterator();
int j=0;
while(it.hasNext()){
j++;
System.out.print(" "+it.next());
if(j%10==0)
System.out.println();
}
try {
System.out.println("索引50"+list.get(50));
System.out.println("索引102"+list.get(102));
} catch (Exception e) {
// TODO: handle exception
System.out.println("越界异常");
}
}
}