Thread: Just installed JDK 13 but no Java Control Panel

Hi - complete newbie - just installed JDK v 13 and created and run my first 'Hello World' java program. Great but I understand there should be a Java Control Panel. I am using Windows 10 - Nothing in Start, Control panel / Apps has Java SE v 13 icon but only option is uninstall, no javacpl in bin - completely lost - please help - thanks guys

Hi All

I am having the same problem with no java control panel. I am a bit new to
java but am catching on quickly. I am using a java library called
"roombacomm". roombacomm is a library for controlling the roomba robot (which
is previded by irobot). It requires a version of java 13 or higher (major 57) and 32bit.
I have a PC capable of running 32 bit and 64 bit. I need to locate the java
control panel to somehow install 32 bit VM. I also need to compile java code
and run it. I was looking at a JDK. If anyone can tell me if There is
any way that I can run a java 13 32 bit version I would be grateful.

Hi Norm

I finally found Java 13 32 bit JDK. It works great, but I can only run my programs in a folder called "roombacomm".

Here is a program I am running. This program runs in the folder "C:\roombacomm_library\roombacomm\roomba_square.ja va". This program works perfectly. I would like to run my programs in the folder "C:\java_programs".

I run this program buy this command: "java -Djava.library.path=rxtxlib -classpath .;rxtxlib/RXTXcomm.jar;rxtxlib/bluecove-2.1.0.jar roombacomm.roomba_square" I think that the problem is that my program can only access the roombacomm library from the roombacomm folder. Any help would be great.

Thanks.




package roombacomm; //import roombacomm package
...
public class roomba_square
{
public static void main(String[] args)//main function
{
RoombaCommSerial roombacomm = new RoombaCommSerial();
connected=roombacomm.connect( portname );
...
roombacomm.startup();
roombacomm.pause(100);
roombacomm.control();
roombacomm.drive(100,300);
wait_key_press();
roombacomm.stop();
roombacomm.disconnect();
...
}
public static void wait_key_press()
{
//wait until key is pressed.
...
}
}