use Java 7 #32

build.gradle

@@ -1,10 +1,10 @@
 apply plugin:'java'
 apply plugin: 'maven'
 defaultTasks 'build'
-version='1.10.1'
+version='1.11.0'
 description='Java implementation of the ISO 8583 protocol, focused on making the creation, edition and reading of ISO8583 messages as simple and flexible as possible.'
-sourceCompatibility=6
-targetCompatibility=6
+sourceCompatibility=7
+targetCompatibility=7
 group='net.sf.j8583'
 
 repositories {
@@ -17,13 +17,13 @@ configurations {
 }
 
 dependencies {
-	compile 'org.slf4j:slf4j-api:1.7.6'
+	compile 'org.slf4j:slf4j-api:1.7.7'
 	testCompile 'junit:junit:4.11'
-	testRuntime 'org.slf4j:slf4j-simple:1.7.6'
+	testRuntime 'org.slf4j:slf4j-simple:1.7.7'
 }
 
 tasks.javadoc.options.use=true
-tasks.javadoc.options.links=['http://download.oracle.com/javase/6/docs/api/', 'http://slf4j.org/apidocs/' ]
+tasks.javadoc.options.links=['http://docs.oracle.com/javase/7/docs/api/', 'http://slf4j.org/apidocs/' ]
 
 task javadocJar(type:Jar, dependsOn:'javadoc') {
 	from javadoc.destinationDir
@@ -34,7 +34,7 @@ task sourcesJar(type:Jar) {
 	classifier='sources'
 }
 
-tasks.withType(Compile) { Compile compile ->
+tasks.withType(AbstractCompile) { AbstractCompile compile ->
 	compile.options.debug = true
 	compile.options.compilerArgs = ['-Xlint:all']
 }