java-7

I've read through the "What's new in Groovy 2.0" and I'm a bit confused about when to use @CompileStatic. The article mentions that the @CompileStatic annotation was added for developers who weren't able to take advantage of the invoke dynamic part of Java7. So developers looking for performance improvements would not see much changes in Groovy 2.0, if they aren’t able to run on JDK 7. Luckily, the Groovy development team thought those developers could get interesting performance boost, among other advantages, by allowing type checked code to be compiled statically. My question is, if I'm

I stumbled upon following problem - when I create .jar file with more than 65k entries, java complains "Invalid or corrupt jarfile". Example: $ # in fresh dir $ for i in {1..70000}; do touch $i; done $ jar cf app.jar {1..70000} $ java -jar app.jar Error: Invalid or corrupt jarfile app.jar But if I use a bit less files, it works: $ jar cf app.jar {1..60000} $ java -jar app.jar no main manifest attribute, in app.jar I heard that there was 65k files limit in old .zip file format, but Java 7 should use ZIP64 by default already. Why is this happening? Is there a way to fix it? Why is this happening

I need a MD5 certificate to use in MapView in android. I have JDK 7 from Oracle installed. But running keytool -v -list -alias alias_name -keystore my-release-key.keystore is not giving me the result, instead it says to install openjdk. How to use the keytool in oracle jdk 7. And i am on ubuntu 12.04 64 bit. You can use keytool by doing this: cd /usr/lib/jvm/jdk1.7.0/bin ./keytool -v -list -alias alias_name -keystore my-release-key.keystore Keytool is not in your path by default, but it does not have to be in your path to be usable. Looks like your jdk installation has problems. Check to see

We were/are stung by the new security baseline requirement with Java's release of 7u45, which caused our applet not work until the end user adjusted the security settings the java control panel (see discussion in below question) Java applet manifest - Allow all Caller-Allowable-Codebase If possible we'd like to put a process in place where we can proactively test new jdk releases. Oracle / Sun appears to offer a way to get notified about this. http://www.oracle.com/technetwork/java/index-jsp-137266.html CAP (Compatibility and Performance Program) is an early access program for Java Standard

I'm trying to call an https link with the webTarget of jersey 2.22.2. The code is that: Client client = ClientBuilder.newBuilder().build(); WebTarget target = client.target(uri); MultivaluedMap<String, Object> headers = new MultivaluedHashMap<String, Object>(); headers.add("Content-Type", "application/json"); headers.add("id", id); headers.add("key", key); Response response = target.request().headers(headers).get(Response.class); In Java 8 it's work great, but in Java 7 it's give me this Connection reset Exception. javax.ws.rs.ProcessingException: java.net.SocketException: Connection reset at

I see a lot of examples that use Files.walkFileTree() to copy a directory and its contents from one location to another, but they fail to take the directory's file attributes and permissions into consideration. Meaning, they just invoke Files.createDirectories() without any attributes or permissions. How does one copy a directory (and its contents) from one location to another without losing file attributes or permissions, using the Java7 core classes? Gili Answering my own question: /** * Copies a directory. * <p> * NOTE: This method is not thread-safe. * <p> * * @param source * the directory