jdk1.6 | 易学教程

Why can't I update Java from 1.6 to 1.7 on Coldfusion 9.0.2 on Mac OSX 10.8.5

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问题 I'm running OSX 10.8.5 and recently installed Coldfusion 9.0.2 and applied the hotfix so I'm running CF Version 9,0,2,282541 (which should be compatible with Java 1.7). My prod environment is running Java 1.7 so I'm trying to replicate that on a dev machine. The Java Version currently being used by CF is 1.6.0_65 . My dev box has Java running in multiple locations as follows: System/Library/Java/JavaVirtualMachines/1.6.0.jdk Library/Java/JavaVirtualMachines/jdk1.7.0_65.jdk When I run java

When Does The JDK Compile Version Matter?

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问题 I have two Java artifacts being built. One needs to be built in 1.6, because PowerMock isn't compatible w/ 1.7 and we are using it in a lot of unit tests. Refactoring PowerMock out right now isn't an option as it will take too much time. However, I want to use this artifact in a Java application built in 1.7 and run the whole thing in 1.7. I think that it should be Ok since it is just building some class files, which I doubt changed much if any probably as far back as 1.2 or earlier. Anyway,

using 64bit and 32 bit JDK

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问题 I have a system running 64bit windows 7. I'm doing a project using JMF, which I found works best (or only) with 32 bit jdk. I'm using a 32bit eclipse. I also have a 64bit JDK installed. right now I have set classpath (JAVA_HOME and Path) for the 32bit JDK. The problem is it becomes hectic to switch between the 64bit and 32 bit JDK(i have to change classpaths everytime). Is there any easier way to do that? 回答1: You can have multiple JREs registered with Eclipse, and associate a project or run

Which JDK for Android Development on Ubuntu 10.04 64-bit?

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问题 Ubuntu 10.04 64-bit looks promising as a development environment for Android. I now have it up and running but I am stuck at the following decision point: Synaptic Package Manager has ' default-jdk ' ("Standard Java or Java compatible Development Kit"). sun.com has two "Java SE Development Kit 6u23 for Linux x64, Multi-language": Java SE Development Kit 6u23: jdk-6u23-linux-x64-rpm.bin Java SE Development Kit 6u23: jdk-6u23-linux-x64.bin Which one is the right one for Android development

How to compile classes to JDK1.5 when ant is running in JDK1.6

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问题 My development environment is running in JDK1.6, and I need to compile some classes so they are compatible with a client running JDK1.5. How would I do this with the 'javac' ant target? 回答1: Command line : javac -target 1.5 sourcefiles Ant: < javac srcdir="${src} destdir="${build}" target="1.5" /> 回答2: <javac source="1.5"... /> 来源： https://stackoverflow.com/questions/169044/how-to-compile-classes-to-jdk1-5-when-ant-is-running-in-jdk1-6

Source code of HashMap.java [closed]

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问题 Closed. This question is off-topic. 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 . I need to look at the source code of HashMap.java of JDK version 1.6.0_19. I searched the web but could not find anywhere. Any pointers is highly appreciated. Thanks. 回答1: Download that version of the JDK. The source code is provided in a src.zip file. 回答2: http://grepcode.com/file/repository.grepcode.com/java

Java Cross-Compilation - Benefits of Latest JDK

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问题 I maintain a Java application which I have always compiled using JDK 1.6 before distributing it as this is the minimum version that my application requires - I don't use any newer features. I don't see the point of compiling it in a later version or older JREs won't be able to run it (i.e. users on Mac OSX which use Java 1.6). Now, with security in the news recently with respect to Java and with bug fixes in later versions of the JDK, is it better to cross compile it using the latest JDK

what is the role of “vm thread” in JDK 1.6 [duplicate]

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问题 This question already has answers here : What does java “VM thread” do? (3 answers) Closed 6 years ago . We are seeing lot of activity of this thread in our customer's system and hence would like to know what might be happening. any links, info, tutorials ? P.S : this is happening on Solaris 10 with JDK 1.6.0_23. 回答1: this thread will give you some step to proceed. If possible i will provide more. http://mail.openjdk.java.net/pipermail/hotspot-dev/2009-February/001249.html This some more

@override annotation in JDK 1.6

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问题 I'm using JDK1.6. When I implement an interface and in the implementing class, if I give @override before my function names, Eclipse throws an compilation error. i.e. below code is wrong according to Eclipse. public class SomeListener implements ServletContextListener { @Override public void contextDestroyed(ServletContextEvent arg0) { // code } /* other overridden methods here */ } If I remove @Override annotation, then the code compiles fine. Does it mean that JDK1.6 does not require us to

jdk1.6 update 32 and JavaFX2.1 does work?

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i am trying to create a embedded browser using the JavaFX2.1 by using jdk1.6 update 32 however it looks like that all the programs are not working because of jdk1.6u32. but at the requirement its clearly mention that JavaFx2.1 will work with the jdk1.6update 32. Does anybody knows what is the reason? I am right now trying to run the sample programs which comes with javaFx2.1 and the below one http://docs.oracle.com/javafx/2/swing/SimpleSwingBrowser.java.htm while executing the above program with jkd1.6u32 and jdk1.7u4 program compiles and executes but doesn't display any page. I saw the below