十年磨一剑

Greeter.java package hello; public class Greeter { public String sayHello() { return "Hello world!"; } } HelloWorld.java package hello; public class HelloWorld { public static v...

sudo apt-get install openjdk-11-jdk-headless then check the folder /usr/lib/jvm/java-11-openjdk-amd64/bin make sure java is inside, otherwise reinstall until it appears. then sudo update-alternatives...

在eclipse 中使用maven compile的时候出现 [WARNING] Unable to autodetect ‘javac’ path, using ‘javac’ from the environment. 解决方式: Right click on project -> Properties -> Java Compiler then uncheck Use compl...