update readme

Author: chriskapp

README.md

@@ -8,3 +8,36 @@ This is a simple Java CLI application which shows how to use the Java SDK to acc
 In this example we simply output all registered routes.
 Fusio is an open source API management which helps to build and manage great APIs more information at:
 https://www.fusio-project.org/
+
+```java
+package org.fusioproject.sample;
+
+import app.sdkgen.client.Exception.ClientException;
+import app.sdkgen.client.TokenStore.MemoryTokenStore;
+import app.sdkgen.client.TokenStoreInterface;
+import org.fusioproject.sdk.Client;
+import org.fusioproject.sdk.backend.OperationCollection;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+
+    public static void main(String[] args) throws ClientException {
+        List<String> scopes = new ArrayList<>();
+        scopes.add("backend");
+        TokenStoreInterface tokenStore = new MemoryTokenStore();
+
+        Client client = new Client("https://demo.fusio-project.org/", "test", "FRsNh1zKCXlB", scopes, tokenStore);
+
+        OperationCollection operations = client.backend().operation().getAll(0, 16, "");
+
+        System.out.println("Operations:");
+        for (int i = 0; i < operations.getEntry().length; i++) {
+            System.out.println("* " + operations.getEntry()[i].getHttpMethod() + " " + operations.getEntry()[i].getHttpPath());
+        }
+    }
+
+}
+
+```