source: The version that your source code requires to compile. target: The oldest JRE version you want to support. Be sure to also set bootclasspath to ensure your program will work on older VMs. From the javac documentation: Cross-Compilation Example The following example uses javac to compile code that will run on a 1.6 VM. … Read more
javac (as “java compiler”) is an executable, which could be theoretically even a platform-dependent executable or a script. This is called to compile a .java to a .class. On windows is its name javac.exe, and it is normally somewhere below C:\Program Files*\jdk*\bin. This compiler was developed in java as well. That means, if we start … Read more
Optimization in Java is mostly done by the JIT compiler at runtime. Hence there is no point trying to instruct it to optimize a certain way at compile time (when it is creating only bytecode anyway). The JIT will almost surely make better decisions on the spot, knowing the exact environment and observing the actual … Read more
Generally the compiler will give up after 100 errors. Most of the errors after this point will likely be caused by one of the first errors. If you must have more errors check out the javac options -Xmaxerrs and -Xmaxwarns
I might be misunderstanding the question, but you can compile with javac /home/MyJavaFile.java This will create MyJavaFile.class in /home You can then run it by including /home on the classpath. e.g. java -cp /home MyJavaFile If you want to generate the class file in a different directory then you can use the -d option to … Read more
-classpath classpath Set the user class path, overriding the user class path in the CLASSPATH environment variable. If neither CLASSPATH or -classpath is specified, the user class path consists of the current directory. If the -sourcepath option is not specified, the user class path is searched for source files as well as class files. -sourcepath … Read more
Suppose you did cd C:/projects and HelloWorld.class is in C:/projects/com, then just type: java com.HelloWorld
You’d run it as: java One.Test … but from the root directory (basic), not from the One directory. You always specify the fully-qualified class name. Oh, and package names in Java should be lower-case, so it should be one and one.inner, not One and One.Inner. Just a convention, but one which pretty much everyone follows.
You should use standard way of configuring Java compile plugin: apply plugin: ‘java’ compileJava { options.compilerArgs << ‘-parameters’ }
Just set the path variable to JDK bin in environment variables. Variable Name : PATH Variable Value : C:\Program Files\Java\jdk1.8.0_31\bin But the best practice is to set JAVA_HOME and PATH as follow. Variable Name : JAVA_HOME Variable Value : C:\Program Files\Java\jdk1.8.0_31 Variable Name : PATH Variable Value : %JAVA_HOME%\bin