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How to fix javac package does not exist?

I am creating in my code a Java file, which I need to convert to a class. My file contains the following:
import com.company.tpch.TpchApplication;
import com.company.tpch.TpchApplicationBuilder;
import com.speedment.runtime.core.ApplicationBuilder;
public class java {
public void x() {
TpchApplication app = new TpchApplicationBuilder()
.withPassword("root")
.withLogging(ApplicationBuilder.LogType.STREAM)
.withLogging(ApplicationBuilder.LogType.APPLICATION_BUILDER)
.withSkipCheckDatabaseConnectivity()
.build();
}
}
When I try to compile the file with
javac -d . C:\Users\s\Desktop\demo\src\main\java\java.java
I have these errors:
import com.company.tpch.TpchApplication;
^
C:\Users\s\Desktop\demo\src\main\java\java.java:2: error: package com.company.tpch does not exist
import com.company.tpch.TpchApplicationBuilder;
^
C:\Users\s\Desktop\demo\src\main\java\java.java:3: error: package com.speedment.runtime.core does not exist
import com.speedment.runtime.core.ApplicationBuilder;
^
C:\Users\s\Desktop\demo\src\main\java\java.java:7: error: cannot find symbol
TpchApplication app = new TpchApplicationBuilder()
^
symbol: class TpchApplication
location: class java
C:\Users\s\Desktop\demo\src\main\java\java.java:11: error: package ApplicationBuilder does not exist
.withLogging(ApplicationBuilder.LogType.APPLICATION_BUILDER)
^
C:\Users\s\Desktop\demo\src\main\java\java.java:10: error: package ApplicationBuilder does not exist
.withLogging(ApplicationBuilder.LogType.STREAM)
^
symbol: class TpchApplicationBuilder
location: class java
How can I solve this?

You need to add all classes that are used to your command. Like this:
javac com/company/tpch/TpchApplication com/company/tpch/TpchApplicationBuilder java.java
Of course you have to change this according to your directory structure, since I don't know it.
Anyway I would recommend an IDE that compiles your whole project at once like IntelliJ/Eclipse and/or a dependency tool like Maven/Gradle.

Cannot find symbol error in cmd but not in IDE

I'm trying to compile the following code (one of two files I need to complete this homework) but I'm getting 2 errors in cmd. This is what cmd throws at me:
CarRentalTest.java:12: error: cannot find symbol
CarRental myCarRental = new CarRental(); //create CarRental object CarRental
^
symbol: class CarRental
location: class CarRentalTest
CarRentalTest.java:12: error: cannot find symbol
CarRental myCarRental = new CarRental(); //create CarRental object CarRental
^
symbol: class CarRental
location: class CarRentalTest
2 errors
And this is the code I'm trying to compile.
public class CarRentalTest {
public static void main (String[] args)
{
CarRental myCarRental = new CarRental(); //create CarRental object CarRental
myCarRental.Customers();
} //end method main
} //end class CarRentalTest
What's weird is that the whole thing runs fine in NetBeans. What am I doing wrong here? :9

What am I doing wrong here?
Not building CarRental, or not telling the compiler where to find the class if you have already compiled it. The IDE is probably assuming you want to build everything, so that's fine.
We don't know how your code is organized, but you should either pass all the relevant filenames to the compiler at the same time:
javac -d classes src\CarRental.java test\CarRentalTest.java
... or put the output directory of the earlier compilation in the classpath for the later compilation, e.g.
javac -d classes src\CarRental.java
javac -d testclasses -cp classes test\CarRentalTest.java

If you are using a standard directory layout for your project, where production and test code are in separate directory trees then the java command line will not see the production class if your currect directory is the test directory.
To clarify:
Suppose you have this dir structure:
src/
main/
java/
mypackage/
CarRental.java
test/
java/
mypackpage/
CarRentalTest.java
and you are in the 'src/test/java/mypackage/' directory, you would experience this error when running javac at the command line - although the production and test classes are in the same package, they are in different directories.
The IDE knows about this directory structure, includes the test path during compilation and therefore it works OK.

You need to import CarRental class in the CarRentalTest.
import yourpackage.CarRental in the CarRentalTest. Java Compiler can't find the CarRental in the CarRentalTest.java.
In the IDE whole package comes in the java file
import package.car.*;
This is why it is working in IDE.

Packages, Files and Getting simple code to run!

I have SimpleSphere.java and TestClass.java stored in a folder called MyPackage.
Attempting to compile TestClass gives this error:
TestClass.java:7: error: cannot find symbol
SimpleSphere ball = new SimpleSphere(19.1);
^
symbol: class SimpleSphere
location: class TestClass
TestClass.java:7: error: cannot find symbol
SimpleSphere ball = new SimpleSphere(19.1);
^
symbol: class SimpleSphere
location: class TestClass
2 errors
But I am fairly certain I have everything set up correctly (evidently I do not, and yet I remain stubborn!). Also, even if these two files were not part of MyPackage, shouldn't JAVA look in the current directory as default and find SimpleSphere???

Seems that you're compiling the classes directly using javac ClassName.java inside the folder where they are located. You have to move one folder up and compile them since there.
Here's a sample of how the files should be located
- basePath
- MyPackage
+ SimpleSphere.java
+ TestClass.java
In your cmd/shell:
# [basePath] javac MyPackage/SimpleSphere.java
# [basePath] javac MyPackage/TestClass.java
# [basePath] java MyPackage.TestClass

Try moving one folder up and then compiling.
Best of Luck.

javac fails with symbol not found

Here is my folder structure:
- myGame/
- bin/
- src/
- common/
- logic/
- main/
- messageprotocol/
- test/
- util/
- Test.java
- Rectangle.java
- Geometry.java
I would like to compile Test.java which is in util package. However, I get symbol not found errors, I guess javac command is wrong. Also, you should know that Test.java has references to other classes within the same project (myGame).
Here is what I do:
cd myGame/
javac -d bin -classpath bin src/util/Test.java
Once I'm done with above, I'd do this and it would work (I hope):
cd myGame/bin
java Test
I have read a lot of resources and tried to apply but it didn't work for my folder structure. What am I doing wrong?
Edit: Errors I receive are:
myGame/src/util/Test.java:16: cannot find symbol
symbol : class Rectangle
location: class util.Test
private static final Rectangle[] rectangles = new Rectangle[someNumber];
^
myGame/src/util/Test.java:16: cannot find symbol
symbol : class Rectangle
location: class util.Test
private static final Rectangle[] rectangles = new Rectangle[someNumber];
^
myGame/src/util/Test.java:20: cannot find symbol
symbol : variable Geometry
location: class util.Test
System.out.println("Printing " + Geometry.NUMBER);
^
myGame/src/util/Test.java:24: cannot find symbol
symbol : variable Geometry
location: class util.Test
serverSocket = new Circle(Geometry.NUMBER);
^
myGame/src/util/Test.java:36: cannot find symbol
symbol : class Rectangle
location: class util.Test
rectangles[i] = new Rectangle(number, rectangles);
^
5 errors

Package structure for your Test.java is util.Test so you should do:
cd myGame/src
javac -d ../bin -classpath ../bin util/Test.java
and then try running it. hope this helps.

Java cannot find symbol when compiling

I am following a Java tutorial (left to my own devices to write the test code), but when trying to compile I get a symbol not found error. I've looked and looked, but cannot work out why the code I have written produces this error. It's probably very simple, but I'd appreciate someone pointing out the cause as I'm pulling my hair out trying to understand what I've done wrong!
TestBeerExpert.java:
package com.example.model;
import com.example.model.*;
import java.util.*;
public class TestBeerExpert {
public static void main(String[] args) {
TestBeerExpert test = new TestBeerExpert();
test.go();
}
private void go() {
BeerExpert expert = new BeerExpert();
List<String> brands = expert.getBrands("amber");
...
}
}
BeerExpert.java:
package com.example.model;
import java.util.*;
public class BeerExpert {
public List<String> getBrands(String color) {
List<String> brands = new ArrayList<String>();
...
return(brands);
}
}
Directory structure:
beerV1 -> src -> com -> example -> model -> TestBeerExpert.java & BeerExpert.java
Compiling from beerV1 with javac -d classes src/com/example/model/TestBeerExpert.java
And the actual error:
src/com/example/model/TestBeerExpert.java:14: error: cannot find symbol
BeerExpert expert = new BeerExpert();
^
symbol: class BeerExpert
location: class TestBeerExpert
src/com/example/model/TestBeerExpert.java:14: error: cannot find symbol
BeerExpert expert = new BeerExpert();
^
symbol: class BeerExpert
location: class TestBeerExpert
2 errors
For the life of me I can't work out what I'm doing wrong. The files are in the same directory and package, so as far as I am aware this should be compiling. I'd be grateful to now only have the code corrected but and explanation of what I have done wrong so I can remember it for the future. Thanks in advance.

Add src to your sourcepath
javac -sourcepath src -d classes src/com/example/model/TestBeerExpert.java
You need to do this because you execute javac from a different directory from where the sources are.
No need to compile BeerExpert first (javac will do it for you with the above command).
Validatation:
~/beerV1$ ls src/com/example/model/
BeerExpert.java TestBeerExpert.java
~/beerV1$ ls classes
~/beerV1$ javac -sourcepath src -d classes src/com/example/model/TestBeerExpert.java
~/beerV1$ ls classes/com/example/model/
BeerExpert.class TestBeerExpert.class

You are getting the compile error because compiler is not able to find BeerExpert class. Try below
1. first compile BeerExpert.java using :
javac -d classes src\com\example\model\BeerExpert.java
2. then compile TestBeerExpert.java
javac -cp classes -d classes src\com\example\model\TestBeerExpert.java