[Floating Clouds of Sky]java essay Records

Vegetable Chicken Study, validation, two points:

1. When invoking a method, the passed parameter is an object, such as objects, which can be directly set to change the original object. such as map,list, can be added directly to the deletion.

List List =new arraylist<> ();

Test (list);

public void Test (list) {

List.add ("1");

}

2. Traverse list, you can set the object directly in the list, do not need to take out to operate alone

List<user> list =new arraylist<user> ();

for (int i=0,s=list.size (); s>i;i++) {

User U=list.get (i);

U.setname ("12");

}

[The Sky]java the clouds]