Question

I’ve use Adobe native process to run java program from my air app. Here the code and it works fine. But i should write absolute path to java runtime for that:

/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java.

If user installed java runtime in diff folder, or have diff version then this code would not work. How i can detect where java were installed or maybe there is another right way to run java applications from air applications? If i run java library from terminal command line then i could just write “java -jar pdfbox-app-1.6.0.jar” etc. and it runs fine.

 private function convertPdf2Txt():void{
        var arg:Vector.<String> = new Vector.<String>;
        arg.push("-jar");
        arg.push(File.applicationDirectory.resolvePath("pdfbox-app-1.6.0.jar").nativePath);
        arg.push("ExtractText"); 
        arg.push("-force");
        arg.push(File.applicationStorageDirectory.resolvePath("Data/1.pdf").nativePath);
        arg.push(File.applicationStorageDirectory.resolvePath("Data/1.txt").nativePath);

        var fjava:File = new File("/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java");
        if (fjava.exists==false){
            Alert.show("Can't find Java Runtime in default folder.","Idea Rover",mx.controls.Alert.OK, null,null,imgInfo);
            return;
        }

        var npInfo:NativeProcessStartupInfo;
        npInfo = new NativeProcessStartupInfo();
        npInfo.executable = fjava;
        npInfo.arguments = arg;

        var nativeProcess:NativeProcess;
        nativeProcess = new NativeProcess();
        nativeProcess.addEventListener(NativeProcessExitEvent.EXIT,onNativeProcessExit);
        nativeProcess.start(npInfo);

    }

Answer 1

Absolute path is:

• Mac OS: /usr/bin/java

• Win OS: (default)

  • 64bit : C:\Program Files\Java
  • 32bit : C:\Program Files (x86)\Java