Make sure you change it to whichever folder your script is actually in. The location in the command below is just an example. Use the cd command to move to the folder that the script is in. #!/bin/bashĮcho "Stay Home" Run Shell script on macOS Open a text editor e.g., TextEdit and paste the following in it. You can use one that you have on hand, or you can use the sample script below. So using the -verbose option can tell us what the compiler is doing: javac -verbose MyProgram.In order to test this, you’ll need a Shell script that you can run. The compiler can compile source files which are related to the specified one, and it does that silently. The target VM version must be greater than or equal the source version, that’s why we specify both the options -target and -source here.īy default, the target VM version is the version of the compiler. Using the -target release option we can do this, for example: javac -target 1.6 -source 1.5 MyProgram.java class files for a specific Java virtual machine (VM) version. That will tell the compiler using specific language features in Java 1.5 to compile the source file. For example: javac -source 1.5 MyProgram.java We can tell the compiler which Java version applied for the source file, by using the -source release option. Specify Java source compatibility version That will compile the MyProgram.java file in the src directory. For example: javac -sourcepath src MyProgram.java We can tell the compiler where to search for the source files by using the -sourcepath directoryoption.
Compile a source file which depends on an external library: javac -classpath mail.jar EmailSender.java.Use the flag -classpath (or -cp) to tell the compiler where to look for external libraries (by default, the compiler is looking in bootstrap classpath and in CLASSPATH environment variable). It’s very common that a Java program depends on one or more external libraries (jar files). Compile a Java source file which has dependencies Compile all source files whose filenames start with Swing:.Javac Program1.java Program2.java Program3.java Compile three source files at once, type:.Compile a single Java source file javac HelloWorld.java 2.
class files are placed under the same directory as the source files.ġ. Type javac -help to view compiler options, and type javac -version to know current version of the compiler. All the commands below are supposing the current working directory is where the source files are placed. So make sure you included this directory in the PATH environment variable so it can be accessed anywhere in command line prompt.This tutorial summarizes common practices for compiling Java source files from command line. The tool is located under JDK_HOME\bin directory. You know, the Java Development Kit (JDK) provides javac which is the Java compiler program.
#BASH SCRIPT EXAMPLE FOR RUNNING JAVA CLASSES ON MAC HOW TO#
In this Java tools tutorial, you will learn how to use the Java compiler via the javac command to compile Java source files (.java) into bytecode files (.class).
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