CLASSPATH=$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar export JAVA_HOME JAVA_BIN PATH CLASSPATH 但是之前没操作过,在查询 $java -version 一直报错,后来发现就是路径配置错误。 你的jdk 1.7.0_65放在目录下,你的java_home就写那个目录。 例如我把jdk 1.7.0_65这个文件夹放在/usr/lib下面,我上面...
2.JAVA_HOME的路径要填写目前jdk所在的目录路径,如果搞错了,就容易出现路径配置错误,系统找不到jdk的情况,会报以下错误: The program'java'can be found in the following packages:*default-jre*gcj-5-jre-headless*openjdk-8-jre-headless*gcj-4.8-jre-headless*gcj-4.9-jre-headless*openjdk-9-jre-headless...
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1JAVAEclipse:could not find the main class,program will exit!我在Eclipse中写了以下一个程序:import java.awt.*;import javax.swing.*;import javax.swing.tree.*;import javax.swing.event.*;//森林状的关系图public class JTreeDemoextends JFrame{ JTextField jtfInfo; //文本域,用于显示点击的节点名称...
Describe the bug I open the launcher, and it says "The system cannot find the file C:\ProgramData\Oracle\Java\javapath\java.exe. Press any key to exit..." I have installed Java. To Reproduce Steps to reproduce the behavior: IDK Expected ...
The program 'mvn' can be found in the following packages: * maven * maven2 Try sudo apt-get install <selected-page> 解决方式例如以下http://askubuntu.com/questions/310059/ubuntu-adding-path-environment-variables 问题是在环境里面加入了PATH,可是须要 ...
java调用本地方法的时候报错 could not find the main class:xx.program will exit 如图所示,当在java调用本地方法的时候报错 我的解决办法是把dll文件放到System.out.println(System.getProperty("java.library.path"));打印出来的任一个路径中即可解决问题...
因为你必须要在 有public static void main(String[] args) { 这句话的文件里运行JAVA 不懂HI我
1.首先,打开配置环境变量界面,如下操作:我的电脑---属性---高级---环境变量 2.系统变量(S)中配置如下:2.1,新建系统变量:变量名:JAVA_HOME 变量值:C:\Program Files\Java\jdk1.5.0_17(该目录为JDK安装的目录)2.2,编辑CLASSPATH,如果没有该变量则新建,变量名:CLASSPATH 变量值:...
What must beinstalled before running a Java program ;2、The root class ofJava is___;3、In Java,___make up for the single inheritance.4、the access modifierof member in a class include public、___and default5、What class can beused to define a constant string. ;6、What exception can ...