Just wondering if anyone has tried using new Java 7 language features with Android? I know that Android reads the bytecode that Java spits out and turns it to dex. So I guess my question is can it understand the bytecode of Java 7? 8 Answers 8
On my machine I have two Java versions installed: (1.6 and 1.7 installed manually by me). I need both of them for different projects. But for Maven I need 1.7, but my Maven uses the 1.6 Java version. How can I set Maven to use 1.7? 25 Answers 25
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 5 years ago. Improve this question Is Java Concurrency in Practice still valid? I am wondering whether the ideas, concepts and implementation described in the … Read more
How do I recursively list all files under a directory in Java? Does the framework provide any utility? I saw a lot of hacky implementations. But none from the framework or nio 30 Answers 30
How can I create a java.nio.file.Path object from a String object in Java 7? I.e. String textPath = “c:/dir1/dir2/dir3”; Path path = ?; where ? is the missing code that uses textPath. 4 Answers 4
I’ve installed JDK 7u7 downloaded from oracle’s website. But after installation, the terminal is still showing java version 6 $java -version java version “1.6.0_35” Java(TM) SE Runtime Environment (build 1.6.0_35-b10-428-11M3811) Java HotSpot(TM) 64-Bit Server VM (build 20.10-b01-428, mixed mode) any idea why java 7 is not showing up? Ans: OK, the problem has been resolved. … Read more
The diamond operator in java 7 allows code like the following: List<String> list = new LinkedList<>(); However in Java 5/6, I can simply write: List<String> list = new LinkedList(); My understanding of type erasure is that these are exactly the same. (The generic gets removed at runtime anyway). Why bother with the diamond at all? … Read more
I’m compiling a project in Eclipse using m2eclipse. I set the JDK path in Eclipse like this: Windows–>preferences–>installed jres–> jdk1.7.xx path But this is showing an error [ERROR] COMPILATION ERROR : [INFO] ————————————————————- [ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? [INFO] 1 error … Read more
Exception in thread “main” java.lang.UnsupportedClassVersionError: a (Unsupported major.minor version 51.0)
The exception message is actually pretty descriptive. The contract it mentions is transitivity: if A > B and B > C then for any A, B and C: A > C. I checked it with paper and pencil and your code seems to have few holes: if (card1.getRarity() < card2.getRarity()) { return 1; you do … Read more