JAVA数组和JAVA集合类的对象操作

public static void main(String[] args) {
	//MessageProcessor mp = new MessageProcessor();
	String[] a = {"aa","bb","cc","dd"};
	String[] b = new String[a.length-2];
	System.arraycopy(a,0,b,0,b.length);
	System.out.println(b[0]+b[1]);
}