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This commit is contained in:
Niket Agrawal 2023-09-19 23:45:25 +05:30
parent 50515d3070
commit 0f425a4573
1 changed files with 4 additions and 2 deletions
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6
core-java-modules/core-java-collections-array-list-2/src/main/java/com/baeldung/list/multiple/objecttypes/AlternativeMultipeTypeList.java
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@ -11,22 +11,24 @@ import java.util.function.Predicate;
public class AlternativeMultipeTypeList { public class AlternativeMultipeTypeList {
public static void main(String[] args) { public static void main(String[] args) {
// List of Numbers // List of Parent Class
ArrayList<Number> myList = new ArrayList<>(); ArrayList<Number> myList = new ArrayList<>();
myList.add(1.2); myList.add(1.2);
myList.add(2); myList.add(2);
myList.add(-3.5); myList.add(-3.5);
// List of Map // List of Interface type
ArrayList<Map> diffMapList = new ArrayList<>(); ArrayList<Map> diffMapList = new ArrayList<>();
diffMapList.add(new HashMap<>()); diffMapList.add(new HashMap<>());
diffMapList.add(new TreeMap<>()); diffMapList.add(new TreeMap<>());
diffMapList.add(new LinkedHashMap<>()); diffMapList.add(new LinkedHashMap<>());
// List of Custom Object
ArrayList<CustomObject> objList = new ArrayList<>(); ArrayList<CustomObject> objList = new ArrayList<>();
objList.add(new CustomObject("obj1", 1)); objList.add(new CustomObject("obj1", 1));
objList.add(new CustomObject("obj2", 2)); objList.add(new CustomObject("obj2", 2));
// List via Functional Interface
List<Object> dataList = new ArrayList<>(); List<Object> dataList = new ArrayList<>();
Predicate<Object> myPricate = inputData -> (inputData instanceof String || inputData instanceof Integer); Predicate<Object> myPricate = inputData -> (inputData instanceof String || inputData instanceof Integer);