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　　String[]str={"a","b","c","d","e"};或String[]sql=newString[]{};1、对String定义与赋值时使用：String[]str={"a","b","c","d","e"};和String[]sql=newString[]{"a","b","c","d","

　　String[]str={"a","b","c","d","e"};或String[]sql=newString[]{};

　　1、对String定义与赋值时使用：

　　String[]str={"a","b","c","d","e"};

　　和String[]sql=newString[]{"a","b","c","d","e"};的区别是什么?

　　2、定义就是指String[]str;

　　赋值和初始化是指：str={"a","b","c","d","e"};或str=ewString[]{"a","b","c","d","e"};?

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2020-05-2416:02

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吕大伟

　　首先这两种方式都是创建了字符串数组.

　　但是第一种方式只创建了一个String[]数组对象str.

　　第二种方式创建了两个String[]数组对象sql和newString[]{"a","b","c","d","e"},相当于我创建了newString[]{"a","b","c","d","e"};这个对象,然后把这个对象的引用赋给sql对象.

2020-05-24 16:02:51

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