Merge pull request #312 from aleksandr-m/feature/java8

Switch to Java 8

.travis.yml

@@ -2,7 +2,6 @@ language: java
 sudo: false
 
 jdk:
-  - openjdk7
   - oraclejdk9
   - oraclejdk11
 

Jenkinsfile

@@ -9,7 +9,7 @@ pipeline {
     disableConcurrentBuilds()
   }
   tools {
-    jdk 'JDK 1.7 (latest)'
+    jdk 'JDK 1.8 (latest)'
     maven 'Maven 3 (latest)'
   }
   triggers {

pom.xml

@@ -96,6 +96,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <java.version>1.8</java.version>
 
         <spring.platformVersion>4.3.20.RELEASE</spring.platformVersion>
         <ognl.version>3.2.10</ognl.version>
@@ -396,8 +397,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>1.7</source>
-                    <target>1.7</target>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
                 </configuration>
             </plugin>
             <plugin>