可变长度参数必须是参数列表中的最后一个，不然会报错String ...paramMore与String...paramMore、String... paramMore等效
import org.apache.commons.lang3.StringUtils;
public class TestMain {
public static void main(String[] args) {
prams("zhangsan", "lisi", "wangwu");
}
public static void prams(String param1, String ...paramMore) {
System.out.println("param1 is : " + param1);
System.out.println("paramMore is : " + StringUtils.join(paramMore, ","));
}
}
执行结果：
param1 is : zhangsan paramMore is : lisi,wangwu示例2
可变长度参数其实是个数组可变长度参数可不填写，数组长度为0（不是null）
import org.apache.commons.lang3.StringUtils;
public class TestMain {
public static void main(String[] args) {
prams("zhangsan");
}
public static void prams(String param1, String ...paramMore) {
System.out.println("param1 is : " + param1);
System.out.println("paramMore length : " + paramMore.length);
System.out.println("paramMore is : " + StringUtils.join(paramMore, ","));
}
}
执行结果：
param1 is : zhangsan paramMore length : 0 paramMore is :
