解决com.sun.tools.javac.Main is not on the classpath的问题

最新推荐文章于 2019-09-09 16:30:46 发布
最新推荐文章于 2019-09-09 16:30:46 发布
阅读量1.4w 收藏 2
点赞数
CC 4.0 BY-SA版权
分类专栏： java 文章标签： eclipse jdk java ide c
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.youkuaiyun.com/lhjlhj123123/article/details/5607106
本文介绍了当Eclipse在编译工程时出现com.sun.tools.javac.Main不在类路径上的错误时的解决办法。首先尝试复制tools.lib文件到相应lib目录，若无效则需配置JDK环境变量并重启IDE。

摘要生成于 C知道 ，由 DeepSeek-R1 满血版支持， 前往体验 >

 

在重装了JDk之后，有可能会使Eclipse在编译工程的时候出现如下错误：

com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "C:/Program Files/Java/jre1.5.0_11"

遇到这种情况时直接将C:/Program Files/Java/jdk1.5.0_11/lib中的tools.lib拷贝到C:/Program Files/Java/jre1.5.0_11/lib中即可。
如果还是不行，那请配置一下JDK的环境变量，并关闭IDE然后重新打开。

 

javac-source-code-reading:javac源码调试-java source code
03-25
这个过程中涉及的类主要包括 `com.sun.tools.javac.main.Main`，它是 javac 的主入口点，以及 `com.sun.tools.javac.parser.JavacParser`，负责解析源代码。 在阅读和调试 javac 源码时，有几点需要注意： 1. **...
ant 解决com.sun.tools.javac.Main is not on the classpath的问题
eternal403的专栏
08-03 758
ant报错：    解决com.sun.tools.javac.Main is not on the classpath的问题   com.sun.tools.javac.Main is not on the classpath.  Perhaps JAVA_HOME does not point to the JDK.  It is currently set to "C:\Program ...
ant中com.sun.tools.javac.Main is not on the classpath问题的解决方案
ws7896的专栏
03-09 2880
以上问题出现在使用eclipse编写ant脚本时使用javac标签时，在网上查询大量资料后都指出是编译器JDK版本设置混乱的原因。本人经过试验后总结如下两点： 1、问题指出JAVA_HOME没有指向jdk，针对此我们需要检查自己电脑上的环境变量JAVA_HOME，看是否出错。 2、在反复检查JAVA_HOME路径没有出错后，还是出现以上的问题时，我们需要检查ant的classpath路径，看是
解决Ant编译com.sun.tools.javac.Main is not on the classpath.Perhaps JAVA_HOME does not point to the JDK
黎昕的博客
09-09 1346
在Ant编译时，会遇到 com.sun.tools.javac.Main is not on the classpath.Perhaps JAVA_HOME does not point to the JDK.It is currently set to "C:\Program Files\Java\jre1.8.0_101" 查看环境变量中，的确已经有JAVA_HOME变量了。Ant在编译时...
Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath.Perhaps JAVA_HOME does not point to the JDK
晗炜的专栏
08-25 4144
今天装了MyEclipse_5.5.1GA_E3.2.2_FullStackInstaller.exe，这个MyEclipse5.5是自带eclipse的，而且还自带了个名为MyEclipse 5.5.1 GA的JRE：安装完成，建了个webproject，写了个简单jsp来测试，结果出现如下错误：Unable to find a javac compiler;com.sun.tools.
com.sun.tools.javac.util依赖
03-18
如果使用的是 JDK 8 或更低版本，则可以通过手动添加 `tools.jar` 到项目的构建路径来解决此问题。具体操作如下： - 将位于 `$JAVA_HOME/lib/tools.jar` 的文件加入到项目的 classpath 中。 - 对于 Maven 用户...
com.sun.tools.javac.code.TypeTags
12-27
### 关于 `com.sun.tools.javac.code.TypeTags` 的解析 #### TypeTags 类概述 `TypeTags` 是 Java 编译器内部使用的枚举类，用于表示不同类型的标签。这些标签主要用于编译期间的类型检查和处理。由于这是一个...
【JDK21升级必知】：一文解决Class com.sun.tools.javac.tree.JCTree$JCImport错误（JDK版本演进与兼容性...
![Class com.sun.tools.javac.tree.JCTree$JCImport does not have member field 'com.sun.tools.javac.tree.JCTree qualid' 升级JDK21后报错]...# 1. JDK版本演进概览 Java发展工具包（JDK）自诞生以来，经历了从...
构建进程终止异常: E:\java1.8\bin\java.exe -Xmx700m -Djava.awt.headless=true "-Djna.boot.library.path=E:\java\IntelliJ IDEA 2023.3.5/lib/jna/amd64" -Djna.nosys=true -Djna.noclasspath=true --add-opens jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED --add-opens jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED -Dexternal.project.config=C:\Users\Lenovo\AppData\Local\JetBrains\IntelliJIdea2023.3\projects\idea.f91729a5\external_build_system -Dcompile.parallel=false -Drebuild.on.dependency.change=true -Didea.IntToIntBtree.page.size=32768 -Djdt.compiler.useSingleThread=true -Daether.connector.resumeDownloads=false -Dio.netty.initialSeedUniquifier=-6547451398445050958 -Dfile.encoding=GBK -Duser.language=zh -Duser.country=CN -Didea.paths.selector=IntelliJIdea2023.3 -Djps.language.bundle=C:/Users/Lenovo/AppData/Roaming/JetBrains/IntelliJIdea2023.3/plugins/zh.233.407/lib/zh.233.407.jar "-Didea.home.path=E:/java/IntelliJ IDEA 2023.3.5" -Didea.config.path=C:/Users/Lenovo/AppData/Roaming/JetBrains/IntelliJIdea2023.3 -Didea.plugins.path=C:/Users/Lenovo/AppData/Roaming/JetBrains/IntelliJIdea2023.3/plugins -Djps.log.dir=C:/Users/Lenovo/AppData/Local/JetBrains/IntelliJIdea2023.3/log/build-log "-Djps.fallback.jdk.home=E:/java/IntelliJ IDEA 2023.3.5/jbr" -Djps.fallback.jdk.version=17.0.12 -Dio.netty.noUnsafe=true -Djava.io.tmpdir=C:/Users/Lenovo/AppData/Local/JetBrains/IntelliJIdea2023.3/compile-server/idea_984e7b7b/_temp_ -Djps.backward.ref.index.builder=true "-Djps.kotlin.home=E:\java\IntelliJ IDEA 2023.3.5\plugins\Kotlin\kotlinc" -Dkotlin.incremental.compilation=true -Dkotlin.incremental.compilation.js=true -Dkotlin.daemon.enabled -Dkotlin.daemon.client.alive.path=\"C:\Users\Lenovo\AppData\Local\Temp\kotlin-idea-5634865019928609788-is-running\" -Dide.propagate.context=false -classpath "E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/jps-launcher.jar" org.jetbrains.jps.cmdline.Launcher "E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/jps-builders.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/jps-builders-6.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/jps-javac-extension.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/util-8.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/util_rt.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/platform-loader.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/annotations.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/protobuf.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/jps-model.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/javac2.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/forms_rt.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/util.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/aether-dependency-resolver.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/maven-resolver-connector-basic.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/maven-resolver-transport-file.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/java/lib/maven-resolver-transport-http.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/idea_rt.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/JavaEE/lib/jasper-v2-rt.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/Kotlin/lib/jps/kotlin-jps-plugin.jar;E:/java/IntelliJ IDEA 2023.3.5/lib/util-8.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/eclipse/lib/eclipse-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/eclipse/lib/eclipse-common.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/JavaEE/lib/javaee-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/uiDesigner/lib/jps/java-guiForms-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/platform-langInjection/lib/java-langInjection-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/javaFX/lib/javaFX-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/javaFX/lib/javaFX-common.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/Groovy/lib/groovy-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/Groovy/lib/groovy-constants-rt.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/maven/lib/maven-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/space/lib/space-java-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/gradle-java/lib/gradle-jps.jar;E:/java/IntelliJ IDEA 2023.3.5/plugins/JPA/lib/jps/javaee-jpa-jps.jar" org.jetbrains.jps.cmdline.BuildMain 127.0.0.1 53139 40546632-3c73-4430-899a-82e079fccf6b C:/Users/Lenovo/AppData/Local/JetBrains/IntelliJIdea2023.3/compile-server Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. Unrecognized option: --add-opens
最新发布
06-21
-完全移除`--add-opens`参数-在IDEA配置中搜索`VMoptions`并删除该参数##配置示例正确参数格式：```bash--add-opensjdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED```错误格式（导致问题的典型情况）：...
问题：Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath.Perhaps JAVA_HOME does not point to the JDK
llh0223的专栏
08-14 4624
在eclipse下，使用tomcat插件时，一切都设置妥当，包括classpath,java_home都设置好了，可是访问.jsp文件时，报告以下错误：Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath.Perhaps JAVA_HOME does not point to the JD
Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK(转
jxcjxinxing的专栏
05-22 5347
  Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK(转) 解决办法：把JAVA_HOME（java的安装目录）/lib/tools.jar拷到TOMCAT_HOME（tomcat的安装目录
解决com.sun.tools.javac.Main is not on the classpath / Unable to find a javac compiler 的问题
fooloveduck的专栏
10-31 1211
ant时报错：    解决com.sun.tools.javac.Main is not on the classpath的问题   com.sun.tools.javac.Main is not on the classpath.   Perhaps JAVA_HOME does not point to the JDK.   It is currently set to "C:\Pro
ant 手动打包报错: com.sun.tools.javac.Main is not on the classpPerhaps JAVA_HOME does not point to the JDK
wqhjfree的专栏
09-22 1978
javac compiler;  com.sun.tools.javac.Main is not on the classpath.  Perhaps JAVA_HOME does not point to the JDK.  It is currently set to "C:\Program Files\Java\jre6"
在Eclipse中 执行Ant Api 报错 Java: ant com.sun.tools.javac.Main is not on the classpath
06-08 652
提示状况：　　[ERROR] *:\xxx\build.xml:xx:Unable to find a javac compiler;　　[ERROR] com.sun.tools.javac.Main is not on the classpath.　　[ERROR]Perhaps JAVA_HOME does not point to the JDK.　　[ERROR]It is curren
com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK.
yuebao的专栏
02-07 723
最近使用ant进行项目编译时，提示： F:\yb\workspace\jobtest\build.xml:15: Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK. It is curren
【cocos2dx】编译安卓平台遇到报错 com.sun.tools.javac.Main is not on the classpath
07-28 862
安装cocos2dx 安卓配置环境的时候遇到的，打包报错如下： com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK. 怀疑导致原因是jdk和jre选择了同一个目录，部分文件被覆盖，不清楚具体原因。 解决方案： E:\develop\android
ant报错： 解决com.sun.tools.javac.Main is not on the classpath的问题
飞鸟的心情
07-30 606
 ant报错：    解决com.sun.tools.javac.Main is not on the classpath的问题   com.sun.tools.javac.Main is not on the classpath.   Perhaps JAVA_HOME does not point to the JDK.   It is currently set to "C
ANT异常com.sun.tools.javac.Main is not on the classpath
mazhongjia的博客
03-04 178
ant编译java源代码时报错：   com.sun.tools.javac.Main is not on the classpath.Perhaps JAVA_HOME does not point to the JDK.It is currently set to "C:\Program Files\Java\jre6"   baidu了一下 原因： 电脑上有多个JDK版本，或者是...
评论
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值