java初学者遇到的问题for (Employee e : employees)，请求大家帮助。

[zhouyang209117]

private static void writeData(Employee[] employees, PrintWriter out) throws IOException
{
// write number of employees
out.println(employees.length);

for (Employee e : employees)
e.writeData(out);
}

for (Employee e : employees)这句是什么意思呀？for循环不是至少要有for(;;)的吗？这句我实在看不懂。请求大家帮助。

[huntor]

1。5 新增的foreach 循环，只要实现 Iterable 接口或是数组

[扬子居]

它是将employees里的元素取出来

[一蚊惊人小号]

嗯，就是JDK提供方便你输出数组和Iterator的写法
相当于：
for （int i = 0; i<employees.length; i++)
{
Employee e = employees[i];
e.writeData(out);
}