无限数组

Question

我想创建一个无限数组，但我的代码中有一些问题导致

线程“main”java.lang.ArrayIndexOutOfBoundsException:0，位于jtb.main(jtb.java:13)

import java.util.Scanner;

public class JTB {
    public static void main(String args[]) {
        //variables and object(s)
        Scanner scanner = new Scanner(System.in);
        int jtb[] = {};
        int input = 0;
        int counter = 0;
        
        //Asks array input from user, 5 should be entered to cancel the loop.
        while(input != 5) {
            input = scanner.nextInt(); //line 13
            jtb[counter] = input;
            ++counter;
        }
        
        //prints out the array no. and the integer inside it.
        for(int counter1 = 0; counter1 < jtb.length; ++counter1) {
            System.out.println("Array " + counter1 + ": " + jtb[counter1]);
        }
    }
}

我怎么让它工作？

Answer 1

Java不支持动态数组。您可以改用ArrayList。