for (String str : list) {
System.out.println(str);//其中str直接就是集合中的元素
}

var car
var garage= new Array()
garage[0] = "寶馬"
garage[1] = "奔馳"
garage[2] = "賓利"
for (car in garage)
{
document.write(garage[car] + " ")
}
//輸出結果： 寶馬 奔馳 賓利

var car
var garage= new Array()
garage[0] = "寶馬"
garage[1] = "奔馳"
garage[2] = "賓利"
garage.locked = true
garage.clean = function(){
alert("清潔")
}
for (car in garage)
{
document.write(garage[car] + " ")
}
//輸出結果：寶馬 奔馳 賓利 true function (){ alert("清潔") }

var car
var garage= new Array()
garage[0] = "寶馬"
garage[1] = "奔馳"
garage[2] = "賓利"
garage.locked = true
garage.clean = function(){
alert("清潔")
}
for (car = 0;car < garage.length;car++)
{
document.write(garage[car] + " ")
}
//輸出結果：寶馬 奔馳 賓利