I have a ArrayList<MyDataType> pList; where MyDataType is a simple class like below:
class MyDataType {
int modified;
String name;
}
If my pList has size of 10 and if i want to retrieve ArrayList of names for all objects in it, how do I do that?
For example
ArrayList<String> myNames = new ArrayList<pList...>();
I want to know what the right hand side of the above statement should look like.
Declare a List<String> than iterate over pList and add name to names list.
List<String> names=new ArrayList<>();
for(MyDataType dt:pList){
names.add(dt.getName())
}
You're going to need to iterate over pList and add each name one by one.
List<String> names = new ArrayList<String>();
for(int i = 0; i < pList.size(); i++)
{
names.add(pList.get(i).getName());
}
There are some functional ways to do this such as Guava, but that comes with some major performance concerns. Stick to the basics and iterate through the list.
List<String> names = new ArrayList<String>();
for(MyDataType element:pList){
//hopefully this would use an accessor element.getName()
names.add(element.name);
}
you can do like this
List<MyDataType > pList=new ArrayList<MyDataType >();
List<String> myNames = new ArrayList<String>();
for (MyDataType myDataType : pList) {
myNames.add(myDataType.getName());
}
