How to run Java program in command prompt

Question

I created a Java project to call a Web service  It has one Main java file and another class file  I have used some jar files for HTTP client  In Eclipse it runs fine  I need to run the Java program in command prompt by passing some arguments  In command prompt I went to src folder containing main java and sub class java file and gave the following command      javac mainjava java       I m getting following error         mainjava java 14  cannot find symbol   symbol    class SubClass       here SubClass is my another java class file used to call the web service   How to run the program by passing arguments

User · Answer

A very general command prompt how to for java is

javac mainjava.java
java mainjava

You'll very often see people doing

javac *.java
java mainjava

As for the subclass problem that's probably occurring because a path is missing from your class path, the -c flag I believe is used to set that.

User · Answer

All you need to do is     Build the mainjava class using the class path if any  optional   javac    java   -cp  wb jar    Create Manifest txt file with content is    Main-Class  mainjava  Package the jar file for mainjava class  jar cfm mainjava jar Manifest txt   class   Then you can run this  jar file from cmd with class path  optional  and put arguments for it   java  -cp  wb jar    mainjava arg0 arg1    HTH

User · Answer

javac only compiles the code  You need to use java command to run the code  The error is because your classpath doesn t contain the class Subclass  iwhen you tried to compile it  you need to add them with the -cp variable in javac command  java -cp classpath-entries mainjava arg1 arg2  should run your code with 2 arguments

User · Answer

You can use javac   java command to compile all you java sources  Also you should learn a little about classpath because it seems that you should set appropriate classpath for succesful compilation  because your IDE use some libraries for building WebService clients   Also I can recommend you to check wich command your IDE use to build your project

User · Answer

javac is the Java compiler  java is the JVM and what you use to execute a Java program  You do not execute  java files  they are just source files  Presumably there is  jar somewhere  or a directory containing  class files  that is the product of building it in Eclipse    java src com mypackage Main java java classes com mypackage Main class java lib mypackage jar   From directory java execute      java -cp lib mypackage jar Main arg1 arg2

[java] How to run Java program in command prompt

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