Update to Java 8

pom.xml

@@ -16,7 +16,7 @@
     <description>Spring Boot Admin</description>
     <url>https://github.com/codecentric/spring-boot-admin/</url>
     <properties>
-        <java.version>1.7</java.version>
+        <java.version>1.8</java.version>
         <main.basedir>${basedir}</main.basedir>
         <spring-boot.version>1.5.4.RELEASE</spring-boot.version>
         <spring-cloud.version>Dalston.SR1</spring-cloud.version>

spring-boot-admin-starter-client/src/test/java/de/codecentric/boot/admin/registration/ApplicationTest.java

 package de.codecentric.boot.admin.registration;
 
+
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.Assert.assertThat;
-import static org.hamcrest.Matchers.is;
-import static org.hamcrest.Matchers.not;
 
 import java.io.IOException;
 
@@ -41,13 +39,13 @@ public class ApplicationTest {
 		Application a2 = Application.create("foo").withHealthUrl("healthUrl")
 				.withManagementUrl("mgmt").withServiceUrl("svc").build();
 
-		assertThat(a1, is(a2));
-		assertThat(a1.hashCode(), is(a2.hashCode()));
+		assertThat(a1).isEqualTo(a2);
+		assertThat(a1.hashCode()).isEqualTo(a2.hashCode());
 
 		Application a3 = Application.create("foo").withHealthUrl("healthUrl2")
 				.withManagementUrl("mgmt").withServiceUrl("svc").build();
 
-		assertThat(a1, not(is(a3)));
-		assertThat(a2, not(is(a3)));
+		assertThat(a1).isNotEqualTo(a3);
+		assertThat(a2).isNotEqualTo(a3);
 	}
 }