Java ArrayList clear()

Java ArrayList [Java ArrayList] Java ArrayList

clear()

clear() 

arraylist.clear()

arraylist ArrayList

ArrayList clear()

import java.util.ArrayList;

class Main {
    public static void main(String[] args){

        //
        ArrayList<String> sites = new ArrayList<>();

        sites.add("Google");
        sites.add("Runoob");
        sites.add("Taobao");
        System.out.println(": " + sites);

        //
        sites.clear();
        System.out.println(" clear() : " + sites);
    }
}

: [Google, Runoob, Taobao]
 clear() : []

sites

clear() sites

clear() removeAll()

removeAll() :

import java.util.ArrayList;

class Main {
    public static void main(String[] args){

        //
        ArrayList<Integer> oddNumbers = new ArrayList<>();

        //
        oddNumbers.add(1);
        oddNumbers.add(3);
        oddNumbers.add(5);
        System.out.println(" ArrayList: " + oddNumbers);

        //
        oddNumbers.removeAll(oddNumbers);
        System.out.println(" removeAll() : " + oddNumbers);
    }
}

:

 ArrayList: [1, 3, 5]
 removeAll() : []

oddNumbers removeAll()

removeAll() clear() clear() removeAll() clear() removeAll()

removeAll() Java ArrayList removeAll()

Java ArrayList [Java ArrayList] Java ArrayList