diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4fa8e3982..d2fee9e46 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 
 ## Next Release
 - Add ability to set expiration date for a collaboration ([#788](https://github.com/box/box-java-sdk/pull/788))
+- Add path parameter sanitization ([#790](https://github.com/box/box-java-sdk/pull/790))
 
 ## 2.45.0 [2020-04-02]
 - Add preflight check before chunked uploads ([#782](https://github.com/box/box-java-sdk/pull/782))
diff --git a/src/main/java/com/box/sdk/BoxFile.java b/src/main/java/com/box/sdk/BoxFile.java
index dad28ee2b..0c34d8880 100644
--- a/src/main/java/com/box/sdk/BoxFile.java
+++ b/src/main/java/com/box/sdk/BoxFile.java
@@ -1051,7 +1051,7 @@ public Metadata createMetadata(String typeName, Metadata metadata) {
      * @return the metadata returned from the server.
      */
     public Metadata createMetadata(String typeName, String scope, Metadata metadata) {
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(), scope, typeName);
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(), scope, typeName);
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "POST");
         request.addHeader("Content-Type", "application/json");
         request.setBody(metadata.toString());
@@ -1297,7 +1297,7 @@ public Metadata getMetadata(String typeName) {
      * @return the metadata returned from the server.
      */
     public Metadata getMetadata(String typeName, String scope) {
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(), scope, typeName);
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(), scope, typeName);
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "GET");
         BoxJSONResponse response = (BoxJSONResponse) request.send();
         return new Metadata(JsonObject.readFrom(response.getJSON()));
@@ -1317,7 +1317,7 @@ public Metadata updateMetadata(Metadata metadata) {
             scope = Metadata.ENTERPRISE_METADATA_SCOPE;
         }
 
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(),
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(),
                 scope, metadata.getTemplateName());
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "PUT");
         request.addHeader("Content-Type", "application/json-patch+json");
@@ -1350,7 +1350,7 @@ public void deleteMetadata(String typeName) {
      * @param scope    the metadata scope (global or enterprise).
      */
     public void deleteMetadata(String typeName, String scope) {
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(), scope, typeName);
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(), scope, typeName);
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "DELETE");
         request.send();
     }
diff --git a/src/main/java/com/box/sdk/BoxFileVersion.java b/src/main/java/com/box/sdk/BoxFileVersion.java
index 2d7704e62..02bcedfaf 100644
--- a/src/main/java/com/box/sdk/BoxFileVersion.java
+++ b/src/main/java/com/box/sdk/BoxFileVersion.java
@@ -271,7 +271,7 @@ public void download(OutputStream output, ProgressListener listener) {
      * Promotes this version of the file to be the latest version.
      */
     public void promote() {
-        URL url = VERSION_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.fileID, "current");
+        URL url = VERSION_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.fileID, "current");
 
         JsonObject jsonObject = new JsonObject();
         jsonObject.add("type", "file_version");
diff --git a/src/main/java/com/box/sdk/BoxFolder.java b/src/main/java/com/box/sdk/BoxFolder.java
index 5216ae33d..f55e6a77a 100644
--- a/src/main/java/com/box/sdk/BoxFolder.java
+++ b/src/main/java/com/box/sdk/BoxFolder.java
@@ -370,7 +370,7 @@ public BoxFolder.Info createFolder(String name) {
      * @param recursive true to recursively delete this folder's contents; otherwise false.
      */
     public void delete(boolean recursive) {
-        URL url = DELETE_FOLDER_URL.build(this.getAPI().getBaseURL(), this.getID(), recursive);
+        URL url = DELETE_FOLDER_URL.buildAlpha(this.getAPI().getBaseURL(), this.getID(), recursive);
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "DELETE");
         BoxAPIResponse response = request.send();
         response.disconnect();
@@ -849,7 +849,7 @@ public Metadata createMetadata(String templateName, Metadata metadata) {
      * @return the metadata returned from the server.
      */
     public Metadata createMetadata(String templateName, String scope, Metadata metadata) {
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(), scope, templateName);
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(), scope, templateName);
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "POST");
         request.addHeader("Content-Type", "application/json");
         request.setBody(metadata.toString());
@@ -925,7 +925,7 @@ public Metadata getMetadata(String templateName) {
      * @return the metadata returned from the server.
      */
     public Metadata getMetadata(String templateName, String scope) {
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(), scope, templateName);
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(), scope, templateName);
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "GET");
         BoxJSONResponse response = (BoxJSONResponse) request.send();
         return new Metadata(JsonObject.readFrom(response.getJSON()));
@@ -938,7 +938,7 @@ public Metadata getMetadata(String templateName, String scope) {
      * @return the metadata returned from the server.
      */
     public Metadata updateMetadata(Metadata metadata) {
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(), metadata.getScope(),
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(), metadata.getScope(),
                 metadata.getTemplateName());
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "PUT");
         request.addHeader("Content-Type", "application/json-patch+json");
@@ -971,7 +971,7 @@ public void deleteMetadata(String templateName) {
      * @param scope        the scope of the template (usually "global" or "enterprise").
      */
     public void deleteMetadata(String templateName, String scope) {
-        URL url = METADATA_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID(), scope, templateName);
+        URL url = METADATA_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID(), scope, templateName);
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "DELETE");
         BoxAPIResponse response = request.send();
         response.disconnect();
diff --git a/src/main/java/com/box/sdk/BoxMetadataCascadePolicy.java b/src/main/java/com/box/sdk/BoxMetadataCascadePolicy.java
index 7015038be..b25deefa4 100644
--- a/src/main/java/com/box/sdk/BoxMetadataCascadePolicy.java
+++ b/src/main/java/com/box/sdk/BoxMetadataCascadePolicy.java
@@ -99,7 +99,7 @@ public BoxMetadataCascadePolicy.Info getInfo(String... fields) {
         if (fields.length > 0) {
             builder.appendParam("fields", fields);
         }
-        URL url = METADATA_CASCADE_POLICIES_URL_TEMPLATE.buildWithQuery(this.getAPI().getBaseURL(),
+        URL url = METADATA_CASCADE_POLICIES_URL_TEMPLATE.buildAlphaWithQuery(this.getAPI().getBaseURL(),
                 builder.toString(), this.getID());
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "GET");
         BoxJSONResponse response = (BoxJSONResponse) request.send();
@@ -140,7 +140,7 @@ public static BoxMetadataCascadePolicy.Info create(final BoxAPIConnection api, S
      */
     public void forceApply(String conflictResolution) {
 
-        URL url = FORCE_METADATA_CASCADE_POLICIES_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID());
+        URL url = FORCE_METADATA_CASCADE_POLICIES_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID());
         BoxJSONRequest request = new BoxJSONRequest(this.getAPI(), url, "POST");
         JsonObject requestJSON = new JsonObject()
                 .add("conflict_resolution", conflictResolution);
@@ -152,7 +152,7 @@ public void forceApply(String conflictResolution) {
      * Deletes the metadata cascade policy.
      */
     public void delete() {
-        URL url = METADATA_CASCADE_POLICIES_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID());
+        URL url = METADATA_CASCADE_POLICIES_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID());
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, "DELETE");
         BoxAPIResponse response = request.send();
     }
diff --git a/src/main/java/com/box/sdk/BoxStoragePolicyAssignment.java b/src/main/java/com/box/sdk/BoxStoragePolicyAssignment.java
index c492e48ca..b4f1d7944 100644
--- a/src/main/java/com/box/sdk/BoxStoragePolicyAssignment.java
+++ b/src/main/java/com/box/sdk/BoxStoragePolicyAssignment.java
@@ -68,7 +68,7 @@ public static BoxStoragePolicyAssignment.Info create(BoxAPIConnection api, Strin
      * @param info the updated info.
      */
     public void updateInfo(BoxStoragePolicyAssignment.Info info) {
-        URL url = STORAGE_POLICY_ASSIGNMENT_WITH_ID_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID());
+        URL url = STORAGE_POLICY_ASSIGNMENT_WITH_ID_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID());
         BoxJSONRequest request = new BoxJSONRequest(this.getAPI(), url, "PUT");
         request.setBody(info.getPendingChanges());
 
@@ -105,7 +105,7 @@ public static BoxStoragePolicyAssignment.Info getAssignmentForTarget(final BoxAP
      * @return information about this {@link BoxStoragePolicyAssignment}.
      */
     public BoxStoragePolicyAssignment.Info getInfo() {
-        URL url = STORAGE_POLICY_ASSIGNMENT_WITH_ID_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID());
+        URL url = STORAGE_POLICY_ASSIGNMENT_WITH_ID_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID());
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, HttpMethod.GET);
         BoxJSONResponse response = (BoxJSONResponse) request.send();
 
@@ -116,7 +116,7 @@ public BoxStoragePolicyAssignment.Info getInfo() {
      * Deletes this BoxStoragePolicyAssignment.
      */
     public void delete() {
-        URL url = STORAGE_POLICY_ASSIGNMENT_WITH_ID_URL_TEMPLATE.build(this.getAPI().getBaseURL(), this.getID());
+        URL url = STORAGE_POLICY_ASSIGNMENT_WITH_ID_URL_TEMPLATE.buildAlpha(this.getAPI().getBaseURL(), this.getID());
         BoxAPIRequest request = new BoxAPIRequest(this.getAPI(), url, HttpMethod.DELETE);
 
         request.send();
diff --git a/src/main/java/com/box/sdk/EventStream.java b/src/main/java/com/box/sdk/EventStream.java
index 8badf564a..30bc89335 100644
--- a/src/main/java/com/box/sdk/EventStream.java
+++ b/src/main/java/com/box/sdk/EventStream.java
@@ -114,7 +114,8 @@ public void start() {
         final long initialPosition;
 
         if (this.startingPosition == STREAM_POSITION_NOW) {
-            BoxAPIRequest request = new BoxAPIRequest(this.api, EVENT_URL.build(this.api.getBaseURL(), "now"), "GET");
+            BoxAPIRequest request = new BoxAPIRequest(this.api,
+                                    EVENT_URL.buildAlpha(this.api.getBaseURL(), "now"), "GET");
             BoxJSONResponse response = (BoxJSONResponse) request.send();
             JsonObject jsonObject = JsonObject.readFrom(response.getJSON());
             initialPosition = jsonObject.get("next_stream_position").asLong();
@@ -210,7 +211,7 @@ public void run() {
                     }
 
                     BoxAPIRequest request = new BoxAPIRequest(EventStream.this.api,
-                        EVENT_URL.build(EventStream.this.api.getBaseURL(), position), "GET");
+                        EVENT_URL.buildAlpha(EventStream.this.api.getBaseURL(), position), "GET");
                     BoxJSONResponse response = (BoxJSONResponse) request.send();
                     JsonObject jsonObject = JsonObject.readFrom(response.getJSON());
                     JsonArray entriesArray = jsonObject.get("entries").asArray();
diff --git a/src/main/java/com/box/sdk/MetadataTemplate.java b/src/main/java/com/box/sdk/MetadataTemplate.java
index dfbb98d87..a43066f24 100644
--- a/src/main/java/com/box/sdk/MetadataTemplate.java
+++ b/src/main/java/com/box/sdk/MetadataTemplate.java
@@ -289,7 +289,7 @@ public static MetadataTemplate updateMetadataTemplate(BoxAPIConnection api, Stri
         }
 
         QueryStringBuilder builder = new QueryStringBuilder();
-        URL url = METADATA_TEMPLATE_URL_TEMPLATE.build(api.getBaseURL(), scope, template);
+        URL url = METADATA_TEMPLATE_URL_TEMPLATE.buildAlpha(api.getBaseURL(), scope, template);
         BoxJSONRequest request = new BoxJSONRequest(api, url, "PUT");
         request.setBody(array.toString());
 
@@ -308,7 +308,7 @@ public static MetadataTemplate updateMetadataTemplate(BoxAPIConnection api, Stri
      */
     public static void deleteMetadataTemplate(BoxAPIConnection api, String scope, String template) {
 
-        URL url = METADATA_TEMPLATE_URL_TEMPLATE.build(api.getBaseURL(), scope, template);
+        URL url = METADATA_TEMPLATE_URL_TEMPLATE.buildAlpha(api.getBaseURL(), scope, template);
         BoxJSONRequest request = new BoxJSONRequest(api, url, "DELETE");
 
         request.send();
@@ -547,7 +547,7 @@ public static MetadataTemplate getMetadataTemplate(
         if (fields.length > 0) {
             builder.appendParam("fields", fields);
         }
-        URL url = METADATA_TEMPLATE_URL_TEMPLATE.buildWithQuery(
+        URL url = METADATA_TEMPLATE_URL_TEMPLATE.buildAlphaWithQuery(
                 api.getBaseURL(), builder.toString(), scope, templateName);
         BoxAPIRequest request = new BoxAPIRequest(api, url, "GET");
         BoxJSONResponse response = (BoxJSONResponse) request.send();
@@ -562,7 +562,7 @@ public static MetadataTemplate getMetadataTemplate(
      */
     public static MetadataTemplate getMetadataTemplateByID(BoxAPIConnection api, String templateID) {
 
-        URL url = METADATA_TEMPLATE_BY_ID_URL_TEMPLATE.build(api.getBaseURL(), templateID);
+        URL url = METADATA_TEMPLATE_BY_ID_URL_TEMPLATE.buildAlpha(api.getBaseURL(), templateID);
         BoxAPIRequest request = new BoxAPIRequest(api, url, "GET");
         BoxJSONResponse response = (BoxJSONResponse) request.send();
         return new MetadataTemplate(response.getJSON());
@@ -605,7 +605,7 @@ public static Iterable<MetadataTemplate> getEnterpriseMetadataTemplates(
             builder.appendParam("fields", fields);
         }
         return new BoxResourceIterable<MetadataTemplate>(
-                api, ENTERPRISE_METADATA_URL_TEMPLATE.buildWithQuery(
+                api, ENTERPRISE_METADATA_URL_TEMPLATE.buildAlphaWithQuery(
                         api.getBaseURL(), builder.toString(), scope), limit) {
 
             @Override
diff --git a/src/main/java/com/box/sdk/URLTemplate.java b/src/main/java/com/box/sdk/URLTemplate.java
index d33ffd53a..d446a999f 100644
--- a/src/main/java/com/box/sdk/URLTemplate.java
+++ b/src/main/java/com/box/sdk/URLTemplate.java
@@ -2,11 +2,14 @@
 
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.util.regex.Pattern;
 
 /**
  * A template class to build URLs from base URL, path, URL parameters and Query String.
  */
 public class URLTemplate {
+    private static final Pattern NUMERIC = Pattern.compile("^[0-9]*$");
+    private static final Pattern ALPHA_NUMERIC = Pattern.compile("^[a-zA-Z0-9!@#$%^&*()_+\\-]*$");
     private String template;
 
     /**
@@ -18,38 +21,102 @@ public URLTemplate(String template) {
     }
 
     /**
-     * Build a URL with URL Parameters.
+     * Build a URL with numeric URL Parameters.
      * @param base base URL
      * @param values URL parameters
      * @return URL
      */
     public URL build(String base, Object... values) {
+        for (Object value: values) {
+            String valueString = String.valueOf(value);
+            Boolean test = NUMERIC.matcher(valueString).matches();
+            if (!NUMERIC.matcher(valueString).matches()) {
+                assert false : "An invalid path parameter passed in. It must be numeric.";
+            }
+        }
+        String urlString = String.format(base + this.template, values);
+
+        URL url = null;
+        try {
+            url = new URL(urlString);
+        } catch (MalformedURLException e) {
+            assert false : "A valid URL could not be constructed from the provided parameters.";
+        }
+
+        return url;
+    }
+
+    /**
+     * Build a URL with alphanumeric URL Parameters.
+     * @param base base URL
+     * @param values URL parameters
+     * @return URL
+     */
+    public URL buildAlpha(String base, Object... values) {
+        for (Object value: values) {
+            String valueString = String.valueOf(value);
+            Boolean test = ALPHA_NUMERIC.matcher(valueString).matches();
+            if (!ALPHA_NUMERIC.matcher(valueString).matches()) {
+                assert false : "An invalid path parameter passed in. It must be alphanumeric.";
+            }
+        }
         String urlString = String.format(base + this.template, values);
 
         URL url = null;
         try {
             url = new URL(urlString);
         } catch (MalformedURLException e) {
-            assert false : "An invalid URL template indicates a bug in the SDK.";
+            assert false : "A valid URL could not be constructed from the provided parameters.";
         }
 
         return url;
     }
 
     /**
-     * Build a URL with Query String and URL Parameters.
+     * Build a URL with Query String and numeric URL Parameters.
      * @param base base URL
      * @param queryString query string
      * @param values URL Parameters
      * @return URL
      */
     public URL buildWithQuery(String base, String queryString, Object... values) {
+        for (Object value: values) {
+            String valueString = String.valueOf(value);
+            if (!NUMERIC.matcher(valueString).matches()) {
+                assert false : "An invalid path param passed in. It must be numeric.";
+            }
+        }
+        String urlString = String.format(base + this.template, values) + queryString;
+        URL url = null;
+        try {
+            url = new URL(urlString);
+        } catch (MalformedURLException e) {
+            assert false : "A valid URL could not be constructed from the provided parameters.";
+        }
+
+        return url;
+    }
+
+    /**
+     * Build a URL with Query String and alphanumeric URL Parameters.
+     * @param base base URL
+     * @param queryString query string
+     * @param values URL Parameters
+     * @return URL
+     */
+    public URL buildAlphaWithQuery(String base, String queryString, Object... values) {
+        for (Object value: values) {
+            String valueString = String.valueOf(value);
+            if (!ALPHA_NUMERIC.matcher(valueString).matches()) {
+                assert false : "An invalid path param passed in. It must be alphanumeric.";
+            }
+        }
         String urlString = String.format(base + this.template, values) + queryString;
         URL url = null;
         try {
             url = new URL(urlString);
         } catch (MalformedURLException e) {
-            assert false : "An invalid URL template indicates a bug in the SDK.";
+            assert false : "A valid URL could not be constructed from the provided parameters.";
         }
 
         return url;
diff --git a/src/test/java/com/box/sdk/BatchAPIRequestTest.java b/src/test/java/com/box/sdk/BatchAPIRequestTest.java
index 675d4e0ee..9d451af4b 100644
--- a/src/test/java/com/box/sdk/BatchAPIRequestTest.java
+++ b/src/test/java/com/box/sdk/BatchAPIRequestTest.java
@@ -185,7 +185,7 @@ public void testMixedBodyTypesWorks() {
         requests.add(createAppUserRequest);
 
         //Update Metadata Template request - uses JSON array as body
-        URL updateMetadataTemplateURL = MetadataTemplate.METADATA_TEMPLATE_URL_TEMPLATE.build(api.getBaseURL(),
+        URL updateMetadataTemplateURL = MetadataTemplate.METADATA_TEMPLATE_URL_TEMPLATE.buildAlpha(api.getBaseURL(),
                 "global", "properties");
         BoxJSONRequest updateMetadataTemplateRequest = new BoxJSONRequest(updateMetadataTemplateURL, HttpMethod.PUT);
         updateMetadataTemplateRequest.setBody("[{\"op\":\"removeField\",\"fieldKey\":\"foo\"}]");
@@ -267,7 +267,7 @@ public void testBatchRequestEndToEnd() throws IOException {
                         .withHeader("Content-Type", "application/json")
                         .withBody(response)));
 
-        URL addMetadataOnFile = BoxFile.METADATA_URL_TEMPLATE.build(this.api.getBaseURL(),
+        URL addMetadataOnFile = BoxFile.METADATA_URL_TEMPLATE.buildAlpha(this.api.getBaseURL(),
                 fileID, scope, template);
         BoxAPIRequest createMetadataRequest = new BoxAPIRequest(addMetadataOnFile, HttpMethod.POST);
         createMetadataRequest.setBody(metadataObject.toString());
diff --git a/src/test/java/com/box/sdk/BoxURLTemplateTest.java b/src/test/java/com/box/sdk/BoxURLTemplateTest.java
new file mode 100644
index 000000000..e8a465d5d
--- /dev/null
+++ b/src/test/java/com/box/sdk/BoxURLTemplateTest.java
@@ -0,0 +1,73 @@
+package com.box.sdk;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+import java.net.URL;
+
+/**
+ * Unit tests for {@link URLTemplate}.
+ */
+public class BoxURLTemplateTest {
+    public static final URLTemplate ADD_COMMENT_URL_TEMPLATE = new URLTemplate("test/%s");
+    public static final String BASE_URL = TestConfig.getAPIConnection().getBaseURL();
+
+    /**
+    * Unit test for {@link URLTemplate#build(String...)}
+    */
+    @Test
+    @Category(UnitTest.class)
+    public void testBuildSucceeds() {
+        String param = "12345";
+        URLTemplate template = new URLTemplate("test/%s");
+        URL url = template.build(BASE_URL, param);
+        String expectedURL = BASE_URL + "test/" + param;
+        Assert.assertEquals(url.toString(), expectedURL);
+    }
+
+    /**
+    * Unit test for {@link URLTemplate#build(String...)}
+    */
+    @Test
+    @Category(UnitTest.class)
+    public void testBuildFails() {
+        URLTemplate template = new URLTemplate("test/%s");
+        try {
+            URL url = template.build(BASE_URL, "1fdsa45");
+        } catch (AssertionError e) {
+            Assert.assertEquals("An invalid path parameter passed in. It must be numeric.", e.getMessage());
+            return;
+        }
+        Assert.fail("Never threw an AssertionError");
+    }
+
+    /**
+    * Unit test for {@link URLTemplate#buildAlpha(String...)}
+    */
+    @Test
+    @Category(UnitTest.class)
+    public void testBuildAlphaSucceeds() {
+        String param = "$123-45_67";
+        URLTemplate template = new URLTemplate("test/%s");
+        URL url = template.buildAlpha(BASE_URL, param);
+        String expectedURL = BASE_URL + "test/" + param;
+        Assert.assertEquals(url.toString(), expectedURL);
+    }
+
+    /**
+    * Unit test for {@link URLTemplate#buildAlpha(String...)}
+    */
+    @Test
+    @Category(UnitTest.class)
+    public void testBuildAlphaFails() {
+        URLTemplate template = new URLTemplate("test/%s");
+        try {
+            URL url = template.buildAlpha(BASE_URL, "1234.45/43/5");
+        } catch (AssertionError e) {
+            Assert.assertEquals("An invalid path parameter passed in. It must be alphanumeric.", e.getMessage());
+            return;
+        }
+        Assert.fail("Never threw an AssertionError");
+    }
+}