BAEL-6963

BAEL-6963 Changes

core-java-modules/core-java-collections-array-list/src/main/java/com/baeldung/list/multiple/objecttypes/CustomObject.java

@@ -0,0 +1,13 @@
+package com.baeldung.list.multiple.objecttypes;
+
+public class CustomObject {
+    String classData;
+
+    CustomObject(String classData) {
+        this.classData = classData;
+    }
+
+    public String getClassData() {
+        return this.classData;
+    }
+}

core-java-modules/core-java-collections-array-list/src/main/java/com/baeldung/list/multiple/objecttypes/MultipleObjectTypeArrayList.java

@@ -0,0 +1,32 @@
+package com.baeldung.list.multiple.objecttypes;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class MultipleObjectTypeArrayList {
+
+    public static void main(String[] args) {
+
+        List<Object> multiTypeList = new ArrayList<>();
+        multiTypeList.add(Integer.valueOf(10));
+        multiTypeList.add(Double.valueOf(11.5));
+        multiTypeList.add("String Data");
+        multiTypeList.add(Arrays.asList(1, 2, 3));
+        multiTypeList.add(new CustomObject("Class Data"));
+
+        for (Object dataObj : multiTypeList) {
+            if (dataObj instanceof Integer intData)
+                System.out.println(intData);
+            if (dataObj instanceof Double doubleData)
+                System.out.println(doubleData);
+            if (dataObj instanceof String stringData)
+                System.out.println(stringData);
+            if (dataObj instanceof List<?> intList)
+                System.out.println(intList);
+            if (dataObj instanceof CustomObject customObj)
+                System.out.println(customObj.getClassData());
+        }
+    }
+
+}