Java数组扩展

Java中，数组初始化后如何扩展数组？

示例

以下示例显示如何在创建新并初始化数组后扩展数组。

package com.yiibai; public class ExtendingArray { public static void main(String[] args) { String[] names = new String[] { "A", "B", "C" }; String[] extended = new String[5]; extended[3] = "D"; extended[4] = "E"; System.arraycopy(names, 0, extended, 0, names.length); for (String str : extended) { System.out.print(str+","); } } } 

Java

执行上面示例代码，得到以下结果 -

A,B,C,D,E,

Shell

示例2

以下是数组扩展的另一个示例示例 -

package com.yiibai; public class ExtendingArray2 { public void extendArraySize() { String[] names = new String[] { "Maxsu", "Minsu", "Sum" }; String[] extended = new String[5]; extended[3] = "Sukida"; extended[4] = "Avg"; System.arraycopy(names, 0, extended, 0, names.length); for (String str : extended) System.out.println(str); } public static void main(String[] args) { new ExtendingArray2().extendArraySize(); } } 

Java

执行上面示例代码，得到以下结果 -

Maxsu
Minsu
Sum
Sukida
Avg