javaw

Java environment does not start even in the control panel [closed]

由 混江龙づ霸主 提交于 2021-01-27 18:12:05
问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 months ago . Improve this question I have this problem for some time but I have not been able to solve it, Java environment or JVM (sorry if I confuse both) just won't start, and programs like Jdownloader2 or Minecraft launcher do not start either, there is also no error message, even when I try

I can run .jar files through cmd, but I cannot double click them

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-17 06:50:18
问题 First, I am studying Java, but I am still very new to it, so complicated code will go over my head. When I download a .jar file to say install a mod to minecraft and double click it, it doesn't run. The loading wheel goes for like two seconds and then stops, and nothing else happens. The .jar I know is set up right because it runs through cmd with the command cd "wherever the file is" java -jar "file name".jar So I've already tried to run it with the default program set as javaw.exe in the

Find absolute java.exe path programmatically from java code

由 落花浮王杯 提交于 2019-12-17 06:48:49
问题 If I have a java jar or class file which is launched by the user (assuming java path is set in environment variables), so how can i from within the code, figure out absolute path of java.exe/javaw.exe from which this file is being launched. Like on ubuntu we can run: % which java and it shows the path. However on windows, if i check System.getenv() it may happen that there are multiple path's found e.g for old or new version. If through cmd line, I run java -version it does not show the path.

Java crashes when calling dll function using JNA

由 谁说我不能喝 提交于 2019-12-13 08:24:44
问题 I'm using JNA to run a dll function: Here is all the code corresponding to that manner: The Native Declarations: //how the method declared H264_Login (char *sIP, unsigned short wPort, char *sUserName, char *sPassword, LP_DEVICEINFO lpDeviceInfo, int *error, ，SocketStyle socketTyle=TCPSOCKET); // where LP_DEVICEINFO is a struct //how the struct declared typedef struct _H264_DVR_DEVICEINFO { SDK_SYSTEM_TIME tmBuildTime; // the "SDK_SYSTEM_TIME" is another struct char sSerialNumber[64]; int

Convert an UploadedFile into a File

由 无人久伴 提交于 2019-12-12 09:36:00
问题 I'm using PrimeFaces 3.2 and I should store a file on filesystem. Now, I know that the class FileUploaded creates a temp file so I would convert it into a real file using java.io.File. Here it is my code: String fileName = "D:/upload/file.zip"; //--- this is an example, in my real code it is dynamic UploadedFile uploadedFile; //--- getters and setters InputStream in = uploadedFile.getInputStream(); OutputStream out = new FileOutputStream(new File(fileName)); int read = 0; byte[] bytes = new

How to auto terminate instances of Java application in eclipse?

由 你。 提交于 2019-12-11 06:43:30
问题 I was doing a small project and everytime I run the program, I can feel more lag and delay, until it is completely not working anymore. I checked with the task managers and found many "Javaw.exe" Instances. Then I opened the debug field and realize that it runs a new instance everytime I run the same project. here is the link to image of the instances in debug area. http://i50.tinypic.com/2hz4spu.png The temporary solution for me is to terminate them from the debug area. Is there any way to

How to find where javaw.exe is installed?

由 白昼怎懂夜的黑 提交于 2019-12-07 01:47:10
问题 So, for a project I am working on, I need to find out where a javaw.exe is located on a user's machine. How do I do that? Assuming that user is on Windows machine The method that I used is limited to English versions of Windows only. I looked for where the OS is installed, locate the Program Files directory, locate Java , jdk directory, bin , then javaw.exe . I know this will not work on non-English versions of Windows. What is the human-language-independent way to do this ? 回答1: For the sake

datanucleus enhancer & javaw: “the parameter is incorrect”

由 二次信任 提交于 2019-12-06 05:17:54
问题 I'm on windows XP using eclipse and the datanucleus enhancer for a gwt + gae app. When I run the enhancer, I get an error: Error Thu Oct 21 16:33:57 CDT 2010 Cannot run program "C:\Program Files\Java\jdk1.6.0_18\bin\javaw.exe" (in directory "C:\ag\dev"): CreateProcess error=87, The parameter is incorrect java.io.IOException: Cannot run program "C:\Program Files\Java\jdk1.6.0_18\bin\javaw.exe" (in directory "C:\ag\dev"): CreateProcess error=87, The parameter is incorrect at java.lang

Eclipse “javaw.exe” High CPU usage

由 北战南征 提交于 2019-12-06 02:23:31
问题 I have standard Eclipse Kepler with CDT installed. Sometimes when it stays idle for a while the javaw.exe starts eating the CPU up to 30%. Nothing is running in Eclipse, no indexing, no library update, no building or compiling. How can I debug Eclipse to see if something is running in background? Does Eclipse have any console or log so I can see what exactly is being done? Not to mention, I even restarted the Eclipse but it just works for a few moment and then again reaches high CPU usage.

How to find where javaw.exe is installed?

由 限于喜欢 提交于 2019-12-05 04:49:56
So, for a project I am working on, I need to find out where a javaw.exe is located on a user's machine. How do I do that? Assuming that user is on Windows machine The method that I used is limited to English versions of Windows only. I looked for where the OS is installed, locate the Program Files directory, locate Java , jdk directory, bin , then javaw.exe . I know this will not work on non-English versions of Windows. What is the human-language-independent way to do this ? For the sake of completeness, let me mention that there are some places (on a Windows PC) to look for javaw.exe in case
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