Core Maven Plugins

maven/src/main/java/com/baeldung/maven/plugins/Data.java

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+package com.baeldung.maven.plugins;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Data {
+    List<String> textList = new ArrayList();
+
+    public void addText(String text) {
+        textList.add(text);
+    }
+
+    public List getTextList() {
+        return this.textList;
+    }
+}

maven/src/test/java/com/baeldung/maven/plugins/DataCheck.java

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+package com.baeldung.maven.plugins;
+
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.Test;
+
+import com.baeldung.maven.plugins.Data;
+
+public class DataCheck {
+    @Test
+    public void whenDataObjectIsCreated_thenItIsNotNull() {
+        Data data = new Data();
+        assertNotNull(data);
+    }
+}

maven/src/test/java/com/baeldung/maven/plugins/DataTest.java

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+package com.baeldung.maven.plugins;
+
+import static org.junit.Assert.assertNull;
+
+import org.junit.Test;
+
+import com.baeldung.maven.plugins.Data;
+
+public class DataTest {
+    @Test
+    public void whenDataObjectIsNotCreated_thenItIsNull() {
+        Data data = null;
+        assertNull(data);
+    }
+}