add example mock "kubectl get configmap xx -o json"

examples/src/main/java/io/kubernetes/client/examples/KubectlJsonExample.java

@@ -0,0 +1,46 @@
+package io.kubernetes.client.examples;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.squareup.okhttp.Response;
+import io.kubernetes.client.ApiClient;
+import io.kubernetes.client.ApiException;
+import io.kubernetes.client.Configuration;
+import io.kubernetes.client.apis.CoreV1Api;
+import io.kubernetes.client.util.Config;
+import java.io.IOException;
+
+/**
+ * A simple example of how to use the Java API
+ *
+ * <p>Easiest way to run this: mvn exec:java
+ * -Dexec.mainClass="io.kubernetes.client.examples.CopyExample"
+ *
+ * <p>From inside $REPO_DIR/examples
+ *
+ * <p>mock "kubectl get configamp configmap-name -o json"
+ */
+public class KubectlJsonExample {
+
+  public static void main(String[] args) throws ApiException, IOException {
+
+    ApiClient client = Config.defaultClient();
+    Configuration.setDefaultApiClient(client);
+
+    CoreV1Api api = new CoreV1Api();
+    com.squareup.okhttp.Call call =
+        api.readNamespacedConfigMapCall("configmap-name", "default", null, null, null, null, null);
+
+    Response response = call.execute();
+
+    if (!response.isSuccessful()) {
+      return;
+    }
+
+    String body = response.body().string();
+
+    JsonObject returnData = new JsonParser().parse(body).getAsJsonObject();
+
+    System.out.println(returnData);
+  }
+}