public class zero {
   
    public static void main(String[] args) {
        // TODO Auto-generated method stub
         int [] oldArr= {1,3,4,0,0,6,6,0,5,4,7,6,7,6,7,0,5};
            int [] newArr= {};
            int i,j=0,len,len1;
        len=oldArr.length;
        for(i=0;i<len;i++)
            if(oldArr[i]!=0)
            {
                    newArr[j]=oldArr[i];
                j++;
            }
        len1=newArr.length;
        for(i=0;i<len1;i++)
            System.out.println(" "+newArr[i]);

    }

}

数组索引越界异常

package com.xiaoa;

public class Zero {
    public static void main(String[] args) {
        // TODO 牛逼
        int[] oldArr = {1, 3, 4, 0, 0, 6, 6, 0, 5, 4, 7, 6, 7, 6, 7, 0, 5};
        int[] newArr = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
//        int[] newArr = {};
        //TODO newArr需要初始化才可以使用
        int i, j = 0, len, len1;
        len = oldArr.length;
        for (i = 0; i < len; i++)
            if (oldArr[i] != 0) {
                newArr[j] = oldArr[i];
                j++;
            }
        len1 = newArr.length;
        for (i = 0; i < len1; i++)
            System.out.println(" " + newArr[i]);

    }
}

数组索引越界，

int[] newArr={};

newArr被初始化为{},长度为0.
而且在java中，数组的长度不会自动调整。
如果想要动态调整长度的特性、又能承受使用这一特性的成本的话，可以考虑使用ArrayList类。

谢谢

谢谢！！！