类路径中不存在 Android Studio 'tools.jar' 文件 [英] Android Studio 'tools.jar' file is not present in classpath
问题描述
我下载了当前版本的 Android Studio(最新版本为 2013 年 7 月 4 日)我还下载了JDK版本7u25.
I downloaded the current version of Android Studio (latest as of 4th July 2013) I also downloaded the JDK version 7u25.
但是启动后显示错误:请确保 JAVA_HOME 指向 JDK 而不是 JRE.
However, it displays error after startup: Please ensure JAVA_HOME points to JDK rather than JRE.
我不知道如何解决这个问题,这不会让我运行 IDE.我将不胜感激.
I don't know how to solve this problem, which won't let me run the IDE. I would appreciate any help.
推荐答案
检查java JDK是否安装正确
Check if java JDK is installed correctly
dpkg --list | grep -i jdk
如果不安装JDK
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update && sudo apt-get install oracle-jdk7-installer
安装后你已经启用了jdk
After the installation you have enable the jdk
update-alternatives --display java
检查 Ubuntu 是否使用 Java JDK 7
Check if Ubuntu uses Java JDK 7
java -version
如果一切顺利,答案应该是这样的:
If all went right the answer should be something like this:
java version "1.7.0_25″
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) Server VM (build 23.3-b01, mixed mode)
检查使用的编译器
javac -version
应该是这样的
javac 1.7.0_25
将 JAVA_HOME 添加到环境变量
Add JAVA_HOME to environment variable
编辑 /etc/environment
并将 JAVA_HOME=/usr/lib/jvm/java-7-oracle
添加到文件末尾
Edit /etc/environment
and add JAVA_HOME=/usr/lib/jvm/java-7-oracle
to the end of the file
sudo nano /etc/environment
添加到文件末尾
JAVA_HOME=/usr/lib/jvm/java-7-oracle
登录和注销(或重新启动)以使更改生效.
如果要删除 oracle JDK
If you want to remove oracle JDK
sudo apt-get remove oracle-jdk7-installer
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