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can i insert js codes using out.write method in java

How can i insert javascript in java file. If i am inserting html tags it works fine but if i insert following js code it doesn't show any errors but it will not show the chart also.
i'am using chart.js
out.write(""<h1>Graph</h1>\n"");
out.write("<canvas id='canvas' height='450' width='600'></canvas>\n");
out.write("<script>\n");
out.write("var barChartData = \n");
out.write("{labels : ['Pass','Fail'],\n");
out.write("datasets : {\n");
out.write("[fillColor : 'rgba(220,220,220,0.5)',\n");
out.write("strokeColor : 'rgba(220,220,220,1)',\n");
out.write("data : [65,0]},{\n");
out.write("fillColor : 'rgba(151,187,205,0.5)',\n");
out.write("data : [0,47]}]}\n");
out.write("var myLine = new Chart(document.getElementById('canvas').getContext('2d')).Bar(barChartData);\n");
out.write("</script>\n");
Is this is the correct way using out.write ?

According to the HTML 4 specification, a <script> element requires either a type or lang attribute, unless you have specified the default scripting language.
A document that doesn't conform to this is erroneous, and the browser is free to ignore the script.
Another possibility is that your script contains errors. Use your browser's web developer support to check for javascript errors.

If you are writing to a file on Windows, use \r\n instead, because windows filesystem doesn't understands \ns as newlines. Else, you must provide more info. It could also be because you missed declarating the script type.

Make a Java Call from within Progress 4gl

Currently, I have a batch file that is basically running an executable jar.
Like this...
java -jar foo.jar
I have code in progress that is executing that batch file and piping out the values it returns into a txt document. I am then reading in that text document and parsing the info accordingly.
However, this is an ugly way of handling this and could lead to many issues down the road. I am basically just looking for a way in progress to execute a os-command and retrieve it's results without writing it to a file and reading back in.
I am running OpenEdge 10.1C
DEFINE INPUT PARAMETER iJarInput AS CHARACTER NO-UNDO.
DEFINE OUTPUT PARAMETER oJarOutput AS CHARACTER NO-UNDO.
DEFINE VARIABLE cOut AS CHARACTER NO-UNDO.
DEFINE VARIABLE cCmd AS CHARACTER NO-UNDO.
ASSIGN
cCmd = batchFile + " " + iJarInput.
OS-COMMAND SILENT VALUE(cCmd).
INPUT FROM VALUE(outFile).
REPEAT:
IMPORT UNFORMATTED cOut.
oJarOutput = oJarOutput + cOut.
END.

You can call external shared libraries.
http://documentation.progress.com/output/OpenEdge112/oe112html/ABL/wwhelp/wwhimpl/common/html/wwhelp.htm#href=Programming%20Interfaces/15dvpinch08epi.089.5.html&single=true
You could, for instance, use that capability to create a "shim" to your JAR.

Capture generated output file path and name using CSSDK

We are in the process of converting over to using the XSLT compiler for page generation. I have a Xalan Java extention to exploit the CSSDK and capture some meta data we have stored in the Extended Attributes for output to the page. No problems in getting the EA's rendered to the output file.
The problem is that I don't know how to dynamically capture the file path and name of the output file.
So just as POC, I have the CSVPath hard coded to the output file in my Java extension. Here's a code sample:
CSSimpleFile sourceFile = (CSSimpleFile)client.getFile(new CSVPath("/some-path-to-the-output.jsp"));
Can someone point me in the CSSDK to where I could capture the output file?

I found the answer.
First, get or create your CSClient. You can use the examples provided in the cssdk/samples. I tweaked one so that I captured the CSClient in the method getClientForCurrentUser(). Watch out for SOAP vs Java connections. In development, I was using a SOAP connection and for the make_toolkit build, the Java connection was required for our purposes.
Check the following snippet. The request CSClient is captured in the static variable client.
CSSimpleFile sourceFile = (CSSimpleFile)client.getFile(new CSVPath(XSLTExtensionContext.getContext().getOutputDirectory().toString() + "/" + XSLTExtensionContext.getContext().getOutputFileName()));

providing automization with Xtext and Java program

In my current project, I am using xText editor for writing my dsl specifications (i.e., voc.mydsl, arch.mydsl, and network.mydsl). I like the xText editor because of its code-completion and other functionalities.
However, I have a separate Java program. This java program takes text files (i.e., voc.txt, arch.txt, network.txt) as inputs, parse these files using ANTLR parser, and generates code using StringTemplate files.
Now, my problem is that currently, I have to follow these steps manually:
(1) I write dsl specifications in XText editor (voc.mydsl, arch.mydsl, and network.mydsl).
(2) I copy-paste these specification into three text files (i.e., voc.txt, arch.txt, network.txt).
(3) Finally, I run the Java program to parse these .txt files and generate code.
Is there any way that I can automize (performed in a single click) all the above three steps? Let me know if you need any detail.

You could write a "special" generator for your DSL. XText will call this generator whenever you edit and save a *.mydsl file. What you actually do in this "Generator" thing is of no interest to Xtext. So your MydslGenerator.xtend generator could look like this:
// whereever Xtext generates your empty version of this file
package mydsl.xtext.generator
// add imports
#Singleton
class MydslGenerator implements IGenerator {
override void doGenerate(Resource resource, IFileSystemAccess fsa) {
// calculate new filename
val newFilename= resource.URI.lastSegment.replaceAll(".mydsl", ".txt")
// get text representation of parsed model
val textContent = resource.contents.map[NodeModelUtils::getNode(it).text].join
// write text content to new file
fsa.generateFile(newFilename, textContent);
// TODO: call ANTLR parser on new file here
}
}
In the last step you can call your "other" program either by calling its main method directly from Eclipse or by invoking a new JVM. The later is only advisable if the other generator works quickly because it is called whenever you save a *.mydsl file. The first method is only advisable when the other program has no memory leaks and has not to many jar dependencies.

Finding size of files locally/remotely

I'm writing a program to find the file size of files.
Is it possible in java?
In PHP I know there is a filesize().
Another alternative was using ab http:// in unix but how is it integratabtle with java?
What do you think is the best/most efficient way to attack this?

You can use java Runtime to execute the command and read the output from the buffer and display it.
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec("ab http://whatever ");
// read the stream into the buffer and display the results.
If you have the file locally, then you can use File.length()

Retrieve a page, extract links, and then only request the header for each uri.
filesize() in PHP may be dicey, as whether or not you're allowed to use it on a remote file will be entirely up to the configuration of your host. You might consider curl instead
Using curl from a shell, for instance, to look at an ad on the rhs of the page as I write this:
curl -I http://static.adzerk.net/Advertisers/180414077f314dbdbaa8d8e2f7898249.gif
...yields, among other things:
Content-Type: image/gif
Content-Length: 17798
...which may be what you're looking for. Within PHP, get the equivalent with CURLOPT_NOBODY