Use Java 11 runtime for blank-java example

- Upgrade runtime from java8 to java11
- Increase code memory size from 512MB -> 2048MB
- Tested all steps and function still runs properly

Author: yualexan

sample-apps/blank-java/build.gradle

@@ -53,8 +53,8 @@ task packageSkinny(type: Zip) {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_1_8
-    targetCompatibility = JavaVersion.VERSION_1_8
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
 }
 
 build.dependsOn packageSkinny

sample-apps/blank-java/pom.xml

@@ -8,8 +8,8 @@
   <name>blank-java-function</name>
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>1.8</maven.compiler.source>
-    <maven.compiler.target>1.8</maven.compiler.target>
+    <maven.compiler.source>11</maven.compiler.source>
+    <maven.compiler.target>11</maven.compiler.target>
   </properties>
   <dependencies>
     <dependency>

sample-apps/blank-java/template-mvn.yml

@@ -7,9 +7,9 @@ Resources:
     Properties:
       CodeUri: target/blank-java-1.0-SNAPSHOT.jar
       Handler: example.Handler::handleRequest
-      Runtime: java8
+      Runtime: java11
       Description: Java function
-      MemorySize: 512
+      MemorySize: 2048
       Timeout: 10
       # Function's execution role
       Policies:

sample-apps/blank-java/template.yml

@@ -7,9 +7,9 @@ Resources:
     Properties:
       CodeUri: build/distributions/blank-java.zip
       Handler: example.Handler::handleRequest
-      Runtime: java8
+      Runtime: java11
       Description: Java function
-      MemorySize: 512
+      MemorySize: 2048
       Timeout: 10
       # Function's execution role
       Policies: