package com.company;

public class Array {
public static void main(String[] args) {

    int[] mumArray={1,2,3,4};
    System.out.println(mumArray[0]);
    System.out.println(mumArray[1]);
    System.out.println(mumArray[2]);
    System.out.println(mumArray[3]);
    System.out.println("长度"+mumArray.length);
    for(int i=0;i<mumArray.length;i++){
        System.out.println(mumArray[i]);
    }
    String[] names={"顾思成","b","c","d"};
    for(int j=0;j<names.length;j++){
        System.out.println(names[j]+"正在上课");

    //下面这种形式不可以 会报错 Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4  at com.company.Array.main(Array.java:20)
    //    names[names.length]="989";
        //  System.out.println(names[names.length]);
        String[] names2= new String[10];
    }
    //想再向数组里加一个人，咋整？

    //新建一个names2 从names中取值过来



}

}