java下标越界怎么解决,java数组下标越界什么意思

(1)要显示出xxxxxxxxxxxxxxxx我写的程序publicclassa231{publicstaticvoidmain(String[]args){intN=Integer.parseInt(args[0]);for(inti=1;i

(1)要显示出

xxxxxxxxxxxxxxxx我写的程序public class a231{ public static void main (String []args){ int N = Integer.parseInt (args [0]);for (int i = 1; i < N+1; i++){for (int j = 1; j < i +1; j++){System.out.print("x");}System.out.print("n");}for (int i = 1; i < N; i++){for (int k = 1; k < N - i +1 ; k++){System.out.print("x");}System.out.print("n");}}}(2)要显示出

x xxx xxxxx xxxxxxx xxxxxxxxx xxxxxxxxxxx xxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx

我写的程序public class a232{public static void main (String []args){int N = Integer.parseInt (args [0]);for (int i = 1; i < N+1; i++){for (int k = 1; k < N - i +1 ; k++){System.out.print(" ");}for (int j = 1; j < 2 * i; j++){System.out.print("x");}System.out.print("n");}}}两题java都提示下标越界，求大神解答啊！！

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