打印出Arraylist

Question

我这里有一个Arraylist:

public static void main(String[] args) {
    Person P1 = new Person("Nathen", 144.5, 55.1);
    Person P2 = new Person("Jamie", 133, 60);
    Person P3 = new Person("Tom", 134, 65);
    Person P4 = new Person("Lavi", 170, 70);

    ArrayList<String> Person = new ArrayList<String>();{
        Person.add(P1.getCategory());
        Person.add(P2.getCategory());
        Person.add(P3.getCategory());
        Person.add(P4.getCategory());
    }

    System.out.println(Person);
}

如何让程序一次打印出Arraylist一行而不是我现在的一行.

Answer 1

用于每个循环

for(String str : Person){
    System.out.println(str);
}