blocks|key|2516626|text|JetBrains+IntelliJ+IDEA的⚠️：转到Help+->+Edit+Custom+Properties...。如果系统要求您创建文件，请创建该文件。要禁用该错误消息，请将以下内容粘贴到您创建的文件中：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|2516627|idea_rt
idea.no.launcher=true|code-block|syntax|javascript|2516628|这将在IntelliJ重新启动时生效。|2516629|entityMap^0|Q|2A|T|X|0|0|0|J|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|U|8|@]|E|@]|F|$J|K]]|$1|L|3|M|5|6|7|V|8|@$9|W|A|X|B|C]]|E|@]|F|$]]|$1|N|3|-4|5|6|7|Y|8|@]|E|@]|F|$]]]|O|$]]

⚠️ For JetBrains IntelliJ IDEA: Go to <code>Help -&gt; Edit Custom Properties...</code>. Create the file if it asks you to create it. To disable the error message paste the following to the file you created:
<pre><code>idea_rt
idea.no.launcher=true
</code></pre>
This will take effect on the restart of the IntelliJ.

blocks|key|42529|text|截至2017年10月，此问题现已在中得到解决|type|unstyled|depth|inlineStyleRanges|entityRanges|data|42530|42531|jdk1.9+|unordered-list-item|offset|length|42532|jdk1.8.152|42533|jdk1.7.161|42534|42535|entityMap|0|LINK|mutability|MUTABLE|url|http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8022291|1|http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8170041|2|http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8170440^0|0|0|0|6|0|0|0|A|1|0|0|A|2|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|10|8|@]|9|@$F|11|G|12|1|13]]|A|$]]|$1|H|3|I|5|E|7|14|8|@]|9|@$F|15|G|16|1|17]]|A|$]]|$1|J|3|K|5|E|7|18|8|@]|9|@$F|19|G|1A|1|1B]]|A|$]]|$1|L|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]|U|$5|P|Q|R|A|$S|V]]|W|$5|P|Q|R|A|$S|X]]]]

As of October 2017, this issue is now resolved in 

<ul>
<li><a href="http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8022291" rel="nofollow noreferrer">jdk1.9</a> </li>
<li><a href="http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8170041" rel="nofollow noreferrer">jdk1.8.152</a></li>
<li><a href="http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8170440" rel="nofollow noreferrer">jdk1.7.161</a></li>
</ul>

blocks|key|2726019|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2726020|从以下位置安装Java7u21：http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u21-oth-JPR|ordered-list-item|offset|length|2726021|Set这些变量：|2726022|2726023|export+JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_21.jdk/Contents/Home+export+PATH=$JAVA_HOME/bin:$PATH|2726024|Run您的应用程序，尽情享受:)|unordered-list-item|2726025|2726026|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u21-oth-JPR^0|0|G|37|0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|W|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|X|7|@]|8|@$D|Y|E|Z|1|10]]|9|$]]|$1|F|3|G|4|C|6|11|7|@]|8|@]|9|$]]|$1|H|3|-4|4|5|6|12|7|@]|8|@]|9|$]]|$1|I|3|J|4|5|6|13|7|@]|8|@]|9|$]]|$1|K|3|L|4|M|6|14|7|@]|8|@]|9|$]]|$1|N|3|-4|4|5|6|15|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|16|7|@]|8|@]|9|$]]]|P|$Q|$4|R|S|T|9|$U|V]]]]

<ol>
<li>Install Java 7u21 from: <a href="http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u21-oth-JPR" rel="nofollow noreferrer">http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u21-oth-JPR</a></li>
<li>Set these variables:

<pre><code>export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_21.jdk/Contents/Home
export PATH=$JAVA_HOME/bin:$PATH
</code></pre></li>
<li>Run your app and have fun :)</li>
</ol>

blocks|key|42498|text|将Pasting+@Lichtamberg的评论复制到gotoalberto的答案中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|42499|也适用于Java1.8：|offset|length|style|BOLD|42500|#+in+~/.zshrc+and+~/.bashrc

export+JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_92.jdk/Contents/Home+
export+PATH=$JAVA_HOME/bin:$PATH+|code-block|syntax|javascript|42501|这解决了我在java8上的问题。|42502|entityMap^0|0|0|C|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Copy Pasting @Lichtamberg's comments to gotoalberto's answer

Works also for Java 1.8: 

<pre><code># in ~/.zshrc and ~/.bashrc

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_92.jdk/Contents/Home 
export PATH=$JAVA_HOME/bin:$PATH 
</code></pre>

This fixed my issue on java 8.

blocks|key|2726170|text|不确定这是否是问题的原因，但是我是在安装JVM+Monitor之后才遇到这个问题的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2726171|卸载JVM+Monitor为我解决了这个问题。|2726172|entityMap^0|K|B|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

Not sure if this is the cause of the problem, but I got this issue only after installing JVM Monitor.

Uninstalling JVM Monitor solved the issue for me.

blocks|key|42236|text|正如其他答案详细说明的那样，这是JDK中的一个错误(直到u45)，它将在JDK7u60中修复-虽然这个问题还没有解决，但您可以从以下位置下载b01：https://jdk7.java.net/download.html|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|42237|这是测试版，但为我修复了这个问题。|42238|entityMap|0|LINK|mutability|MUTABLE|url|https://jdk7.java.net/download.html^0|22|Z|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

As other answers detail, this is a bug in the JDK (up to u45) which will be fixed in JDK7u60 - while this is not out yet, you may download the b01 from: <a href="https://jdk7.java.net/download.html" rel="nofollow noreferrer">https://jdk7.java.net/download.html</a>

It's beta, but fixed that issue for me.

blocks|key|42264|text|https://groups.google.com/forum/#!topic/google-appengine-stackoverflow/QZGJg2tlfA4|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|42265|根据我在网上找到的，这是JDK+1.7.0_45中引入的a+bug。我读到它将在Java的下一个版本中修复，但它还没有发布。据推测，它已经在1.7.0_60b01中修复了，但我找不到下载它的地方，1.7.0_60b02重新引入了这个错误。|style|BOLD|42266|我设法通过恢复到JDK+1.7.0_25来解决这个问题。可能不是您想要的解决方案，但这是我能够让它工作的唯一方法。不要忘记在安装JDK之后在Eclipse中添加JDK+1.7.0_25。|42267|请不要直接回复此电子邮件，请转至StackOverflow：Class+JavaLaunchHelper+is+implemented+in+both.+One+of+the+two+will+be+used.+Which+one+is+undefined|42268|entityMap|0|LINK|mutability|MUTABLE|url|1|https://stackoverflow.com/questions/20794751/class-javalaunchhelper-is-implemented-in-both-one-of-the-two-will-be-used-whic/20807657#20807657^0|0|2A|0|0|S|5|0|0|U|2Q|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@$A|Z|B|10|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|11|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|L|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|4]]|S|$5|O|P|Q|C|$R|T]]]]

<a href="https://groups.google.com/forum/#!topic/google-appengine-stackoverflow/QZGJg2tlfA4" rel="nofollow noreferrer">https://groups.google.com/forum/#!topic/google-appengine-stackoverflow/QZGJg2tlfA4</a>

From what I've found online, this is a bug introduced in JDK 1.7.0_45. I've read it will be fixed in the next release of Java, but it's not out yet. Supposedly, it was fixed in 1.7.0_60b01, but I can't find where to download it and 1.7.0_60b02 re-introduces the bug.

I managed to get around the problem by reverting back to JDK 1.7.0_25. Probably not the solution you wanted, but it's the only way I've been able to get it working. Don't forget add JDK 1.7.0_25 in Eclipse after installing the JDK.

Please DO NOT REPLY directly to this email but go to StackOverflow:
<a href="https://stackoverflow.com/questions/20794751/class-javalaunchhelper-is-implemented-in-both-one-of-the-two-will-be-used-whic/20807657#20807657">Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined</a>

blocks|key|42286|text|为了解决这个问题，我降级到了JDK+version+1.7.0_21。然后，我使用this小bash脚本更改了我使用的版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|42287|function+setjdk()+{
++if+[+$#+-ne+0+];+then
+++removeFromPath+'/System/Library/Frameworks/JavaVM.framework/Home/bin'
+++if+[+-n+"${JAVA_HOME%2Bx}"+];+then
++++removeFromPath+$JAVA_HOME
+++fi
+++export+JAVA_HOME=`/usr/libexec/java_home+-v+$@`
+++export+PATH=$JAVA_HOME/bin:$PATH
++fi
+}

+function+removeFromPath()+{
++export+PATH=$(echo+$PATH+%7C+sed+-E+-e+"s;:$1;;"+-e+"s;$1:?;;")
+}|code-block|syntax|javascript|42288|在zshrc/bshrc文件中有了bash脚本后，只需调用setJdk+1.7.0_21就可以了。|style|CODE|42289|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html|1|http://www.jayway.com/2014/01/15/how-to-switch-jdk-version-on-mac-os-x-maverick/^0|E|K|0|15|4|1|0|0|T|F|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]|$A|10|B|11|1|12]]|C|$]]|$1|D|3|E|5|F|7|13|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|14|8|@$A|15|B|16|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]|U|$5|P|Q|R|C|$S|V]]]]

To solve this issue, I downgraded to <a href="http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html" rel="nofollow noreferrer">JDK version 1.7.0_21</a>. then I used <a href="http://www.jayway.com/2014/01/15/how-to-switch-jdk-version-on-mac-os-x-maverick/" rel="nofollow noreferrer">this</a> little bash script to change the version I use.

<pre><code>function setjdk() {
 if [ $# -ne 0 ]; then
 removeFromPath '/System/Library/Frameworks/JavaVM.framework/Home/bin'
 if [ -n "${JAVA_HOME+x}" ]; then
 removeFromPath $JAVA_HOME
 fi
 export JAVA_HOME=`/usr/libexec/java_home -v $@`
 export PATH=$JAVA_HOME/bin:$PATH
 fi
 }

 function removeFromPath() {
 export PATH=$(echo $PATH | sed -E -e "s;:$1;;" -e "s;$1:?;;")
 }
</code></pre>

Once you have the bash script in your zshrc/bshrc file, just call <code>setJdk 1.7.0_21</code> and you're good to go.

blocks|key|43590|text|经过一番挣扎之后，对我来说起作用的是完全删除了当前的JDK，即described+here|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|43591|sudo+rm+-rf+/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk
sudo+rm+-rf+/Library/PreferencePanes/JavaControlPanel.prefPane
sudo+rm+-rf+/Library/Internet\+Plug-Ins/JavaAppletPlugin.plugin
sudo+rm+-rf+/Library/LaunchAgents/com.oracle.java.Java-Updater.plist
sudo+rm+-rf+/Library/PrivilegedHelperTools/com.oracle.java.JavaUpdateHelper
sudo+rm+-rf+/Library/LaunchDaemons/com.oracle.java.JavaUpdateHelper.plist
sudo+rm+-rf+/Library/Preferences/com.oracle.java.Helper-Tool.plist|code-block|syntax|javascript|43592|然后安装从here下载的1.7.0_21。|43593|现在java+-version会提示：|style|CODE|43594|java+version+"1.7.0_21"
Java(TM)+SE+Runtime+Environment+(build+1.7.0_21-b12)
Java+HotSpot(TM)+64-Bit+Server+VM+(build+23.21-b01,+mixed+mode)|43595|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/23092014/213210|1|http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u21-oth-JPR^0|V|E|0|0|0|5|4|1|0|2|D|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|15|8|@]|9|@$A|16|B|17|1|18]]|C|$]]|$1|K|3|L|5|6|7|19|8|@$A|1A|B|1B|M|N]]|9|@]|C|$]]|$1|O|3|P|5|F|7|1C|8|@]|9|@]|C|$G|H]]|$1|Q|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]|Y|$5|T|U|V|C|$W|Z]]]]

Well, after some struggling, what worked for me was completely removing the current JDK, as <a href="https://stackoverflow.com/a/23092014/213210">described here</a>:

<pre><code>sudo rm -rf /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk
sudo rm -rf /Library/PreferencePanes/JavaControlPanel.prefPane
sudo rm -rf /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -rf /Library/LaunchAgents/com.oracle.java.Java-Updater.plist
sudo rm -rf /Library/PrivilegedHelperTools/com.oracle.java.JavaUpdateHelper
sudo rm -rf /Library/LaunchDaemons/com.oracle.java.JavaUpdateHelper.plist
sudo rm -rf /Library/Preferences/com.oracle.java.Helper-Tool.plist
</code></pre>

Then installed 1.7.0_21, which was downloaded from <a href="http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html#jdk-7u21-oth-JPR" rel="nofollow noreferrer">here</a>.

Now <code>java -version</code> prompts:

<pre><code>java version "1.7.0_21"
Java(TM) SE Runtime Environment (build 1.7.0_21-b12)
Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)
</code></pre>

blocks|key|42405|text|2019年7月|type|unstyled|depth|inlineStyleRanges|entityRanges|data|42406|OSX+Mojave+10.14.5+(18F132)+IntelliJ+2019-1社区版。设置idea.properties文件正常工作。我还配置了指向/Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/的JAVA_HOME|42407|自定义IntelliJ+IDEA属性|42408|idea_rt+idea.no.launcher=true|42409|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

<h2>July 2019</h2>
OSX Mojave 10.14.5 (18F132)
IntelliJ 2019-1 Community Edition. It worked setting idea.properties file. I also configured JAVA_HOME pointing to /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/
<h3>custom IntelliJ IDEA properties</h3>
idea_rt
idea.no.launcher=true

blocks|key|2726342|text|如果您使用的是IntelliJ+&+Mac，只需转到项目结构Java，并确保其中列出了->，但它指向类似于|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2726343|/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home|code-block|syntax|javascript|2726344|而不是用户主页...|2726345|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you're using IntelliJ &amp; Mac just go to Project structure -> SDK and make sure that there is Java listed but it points to sth like 

<pre><code>/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home
</code></pre>

Rather than user home...

blocks|key|43547|text|jdk-7u80-macosx-x64.dmg解决此问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|43548|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

jdk-7u80-macosx-x64.dmg fix this problem.

I upgraded to the latest Java 7u40 on MacOS X and started getting the following message on the console when launching my application using Eclipse. The app works fine but I would like to find out the cause of the problem and hopefully a fix for it. 

<pre><code>objc[10012]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/bin/java and /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre/lib/libinstrument.dylib. One of the two will be used. Which one is undefined.
</code></pre>

Does anyone know why this message is printed and how to fix it?

Class JavaLaunchHelper is implemented in both ... libinstrument.dylib. One of the two will be used. Which one is undefined

IntelliJ IDEA

Eclipse

MacOS

Java

我在MacOS X上升级到了最新的EclipseJava7u40，并在使用启动我的应用程序时开始在控制台上收到以下消息。这个应用程序运行良好，但我想找出问题的原因，并希望解决它。objc[10012]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Co

问类JavaLaunchHelper在这两个版本中都实现了...libinstrument.dylib。将使用两个中的一个。哪一个是未定义的
EN

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问类JavaLaunchHelper在这两个版本中都实现了...libinstrument.dylib。将使用两个中的一个。哪一个是未定义的EN

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问类JavaLaunchHelper在这两个版本中都实现了...libinstrument.dylib。将使用两个中的一个。哪一个是未定义的
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