java-7

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . What is the link to install JDK7 (Java 7) on Mac OS X 10.7.3? What version does it install? Where does it install on my box? How do I use it? 回答1: Download Java SE 7u4 from Oracle. (This is 64-bit only) This

问题 I have been asked to 'translate' some Scala code to Java for a course. However, the requirements of the assignment are that Java 8 and external libraries, such as Functional Java and Totally Lazy, are not allowed . The line in Scala is: charges.groupBy(_.cc).values.map(_.reduce(_ combine _)).toList I have been able to write groupBy and values but .map and _.reduce still elude me. I have looked at the source code of those two libraries as well as the Scala source to try and find something to

问题 I have an application that works perfectly fine on Tomcat 6. I have now moved this application to Tomcat 7 and the JSPs are throwing below compilation exception Mar 21, 2014 12:05:56 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [jsp] in context with path [/core-tool-5.0] threw exception [Unable to compile class for JSP: An error occurred at line: 22 in the generated java file The type welcome_jsp must implement the inherited abstract method

问题 I upgraded jdk to version 7_45. After compiling and executing the jar, which works fine, i packed it into an application bundle. But unfortunately i get this error message "LSOpenURLsWithRole() failed with error -10810 for the file /Users/.../MyApp.app". The same problem with the jdk 8 Early Access. I also. tried different setting in the info.plist for the "JVMVersion" key Since the jar itself works fine, i could do a workaround by replacing the JavaApplicationStub with my own executable

问题 Is there a list of what is broken when trying to Run ColdFusion 9.01 on Java 7? I have experienced issues with PDF generation. This Link: http://blogs.coldfusion.com/post.cfm/java-7-support-for-coldfusion suggests that it is related to textarea on PDF But is there a complete list of known issues? 回答1: Java 1.7 Update 15 is now officially supported with Cumulative Hotfix 3 (now superseded by 4) http://helpx.adobe.com/coldfusion/kb/cumulative-hotfix-3-coldfusion-901.html 回答2: It's just like the

问题 i getting this error % gradle build [ant:javac] Hello.java:2: error: package javax.persistence does not exist Hello.java:2: import javax.persistence.*; what should i add to gradle.build to include /opt/glassfish3/glassfish/modules/javax.persistence.jar thx 回答1: Try adding compile group: 'javax.persistence', name: 'persistence-api', version: '1.0' to your dependencies. 来源： https://stackoverflow.com/questions/9271849/add-glassfish-javax-persistence-to-gradle-project

问题 I'm trying to upgrade an app from JDK7 to JDK8 which uses the following classes from the sun.security.* packages sun.security.x509.X509CertImpl sun.security.pkcs11.SunPKCS11 sun.security.util.DerOutputStream sun.security.util.DerValue sun.security.util.ObjectIdentifier sun.security.pkcs.PKCS10 sun.security.x509.X500Name sun.security.pkcs11.SunPKCS11 sun.security.pkcs11.wrapper.CK_TOKEN_INFO sun.security.pkcs.PKCS10 The usage of these classes generates warnings in all cases except for sun

问题 I can sort a list of users without any problems using the following code and Java 8: CopyOnWriteArrayList<User> allCurrentLoginnedUsersList = new CopyOnWriteArrayList<>(); Collections.sort(allCurrentLoginnedUsersList); Now, I changed to Java 7 and I saw no errors on eclipse. But now, when running under Java 7 I got this error: java.lang.UnsupportedOperationException at java.util.concurrent.CopyOnWriteArrayList$COWIterator.set(CopyOnWriteArrayList.java:1049) at java.util.Collections.sort

问题 Reading about what kind of bytecode Java 8 produces from lambdas, it came to my mind the time when Java 5 was released. Back then there was Retroweaver and other tools for converting bytecode compiled with JDK 5 to run on JRE 1.4. Has anybody yet created such a backporting tool for Java 8 lambdas? It would let Java developers start using lambdas already today on production-quality Java 7 JREs, without having to wait 6-12 months for Java 8's GA release. Here is my analysis of why such as

问题 Reading about what kind of bytecode Java 8 produces from lambdas, it came to my mind the time when Java 5 was released. Back then there was Retroweaver and other tools for converting bytecode compiled with JDK 5 to run on JRE 1.4. Has anybody yet created such a backporting tool for Java 8 lambdas? It would let Java developers start using lambdas already today on production-quality Java 7 JREs, without having to wait 6-12 months for Java 8's GA release. Here is my analysis of why such as