java-7

问题 I have installed WAS 8.5 Trial version on Windows 7. I would like to deploy and run Java 7 application. Is it possible to do it? I can not see "IBM WebSphere SDK for Java Technology Edition 7" in the IBM Installation Manager's feature list and there is no SDK 7 installed, yet. >managesdk.bat -listAvailable CWSDK1003I: Available SDKs : CWSDK1005I: SDK name: 1.6_64 CWSDK1001I: Successfully performed the requested managesdk task. > Has somebody managed to make WAS 8.5 Trial and Java 7 work

问题 I've read that multiline string literals were proposed to be added in Java 7. Although I can't find any documentation saying definitely that they have been. I'd like to know if they are, because this is something I'd consider switching versions for. 回答1: Multiline string literals are not going to be added to JDK 7. You can check Project Coin's homepage for a list of language changes. However, you can use Scala, which does support multiline string literals using triple quotes: var s = """Hello

问题 Trying to troubleshoot an occasional java.nio.file.DirectoryNotEmptyException in a recursive delete method taken from Delete directories recursively in Java Code (credit to @TrevorRobinson) : static void removeRecursive(Path path) throws IOException { Files.walkFileTree(path, new SimpleFileVisitor<Path>() { final Logger logger = LoggerFactory.getLogger(this.getClass()); @Override public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException { logger.warn("Deleting

问题 So I'm getting these errors [junit] Illegal local variable table length 17 in method test.nz.ac.massey.cs.sdc.log4jassignment.s06005586.AppenderLayoutTest.()V [junit] java.lang.VerifyError: Expecting a stackmap frame at branch target 11 in method test.nz.ac.massey.cs.sdc.log4jassignment.s06005586.StressTest.()V at offset 4 [junit] java.lang.ClassFormatError: Illegal local variable table length 17 in method test.nz.ac.massey.cs.sdc.log4jassignment.s06005586.AppenderLayoutTest.()V And I would

问题 Just noted that you can´t sign Android APKs with the Java 1.7 jarsigner. So I wonder why this is and what is the difference between the 1.6 and 1.7 signer? 回答1: This is because the default digest algorithm for Java 1.7 is SHA-256 while for Java 1.6 it's SHA1withDSA . Java 1.6 Jarsigner docs Java 1.7 Jarsigner docs 回答2: Yes you CAN use 1.7! It is very tricky to find info on the usage with 1.7, but once found it is reasonable simple: For keytool include -sigalg SHA1withDSA -keyalg DSA -keysize

问题 Recently apt-get install -y oracle-java7-installer stopped working. I know in their roadmap, I think the public version is no longer supported, but it's been working all the way until recently. http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html Anyone have a work around for this? http://download.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz?AuthParam=1495560077_4041e14adcb5fd7e68827ab0e15dc3b1 Connecting to download.oracle.com (download.oracle

问题 Does anyone encountered the case when a java.io.File doesn't exist but the calling getAbsoluteFile() method on the file instance returns a file that does exist. And why this happen? Note I am on Linux plus Oracle Java runtime with version 1.7.0_95-b00 I've passed in a JVM option -Duser.dir=/path/to/somewhere when launching the tomcat instance 回答1: You should probably not mess around with user.dir . Rather, change to that directory before launching the Tomcat. File.getAbsoluteFile() is

问题 Is there a bug is java.util.Date? While doing some testing, I was setting the milliseconds to 2147483647 which should give me a date of 2038-01-19 03:14:07 but it is returning 1970-01-25 20:31:23. Also tried it with 4294967295 and get the wrong answer of 1970-02-19 17:02:47. Does anyone know of a work around import java.util.*; import java.io.*; /* centos 6.3 x64 java version "1.7.0_13" Java(TM) SE Runtime Environment (build 1.7.0_13-b20) Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01,

问题 I am running JUnit case with PowerMock in jdk7 using the below libraries : cglib-nodep-2.2.2.jar javassist-3.19.0-GA.jar junit-4.12.jar mockito-all-1.10.19.jar objenesis-2.1.jar powermock-mockito-1.6.2-full.jar Below is code snippet from my Unit Test in which I am using PowerMock @RunWith(PowerMockRunner.class) @PrepareForTest(ValidateBindingImpl.class) public class ValidateBindingImplTest{ //more code follows } While executing this test case I am getting following error: java.lang

问题 This question already has answers here : How do I compile a .java with support for older versions of Java? (5 answers) Closed 8 months ago . I have created a windows application using java 8 . But my client is using java 7 on his machine and not able to upgrade java on the machine. So when i run jar on java7 compiled in java 8 it gives error so can i convert jar compatible to lower version java 回答1: You can't change a compiled jar's Java version. You have 2 option in hand. Compile the Source