diff --git a/core-java-modules/core-java-8/src/main/java/com/baeldung/java_8_features/groupingby/Tuple.java b/core-java-modules/core-java-8/src/main/java/com/baeldung/java_8_features/groupingby/Tuple.java
new file mode 100644
index 0000000000..7a9f62341e
--- /dev/null
+++ b/core-java-modules/core-java-8/src/main/java/com/baeldung/java_8_features/groupingby/Tuple.java
@@ -0,0 +1,34 @@
+package com.baeldung.java_8_features.groupingby;
+
+public class Tuple {
+
+    private BlogPostType type;
+    private String author;
+    
+    public Tuple(BlogPostType type, String author) {
+        super();
+        this.type = type;
+        this.author = author;
+    }
+
+    public BlogPostType getType() {
+        return type;
+    }
+
+    public void setType(BlogPostType type) {
+        this.type = type;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    @Override
+    public String toString() {
+        return "Tuple [type=" + type + ", author=" + author + ", getType()=" + getType() + ", getAuthor()=" + getAuthor() + ", getClass()=" + getClass() + ", hashCode()=" + hashCode() + ", toString()=" + super.toString() + "]";
+    }
+}