diff --git a/AlgebraicDataflowArchitectureModel/prototypes/Java/CustomerManagement/Companies.java b/AlgebraicDataflowArchitectureModel/prototypes/Java/CustomerManagement/Companies.java
new file mode 100644
index 0000000..148543f
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/prototypes/Java/CustomerManagement/Companies.java
@@ -0,0 +1,14 @@
+import java.util.*;
+
+public class Companies {
+	private Map<String, Company> value = new HashMap<>();
+	public Map<String, Company> getValue() {
+		return new HashMap<>(value);
+	}
+	public Company getCompany(String cid) {
+		return this.value.get(cid);
+	}
+	public void addCampany(String address, String cid) {
+		this.value.put(cid,new Company(address));
+	}
+}
\ No newline at end of file