Find out if jar.exe is available

Question

I want to execute "jar.exe" from my code using

Process p = Runtime.getRuntime().exec("jar.exe -xf " + completePathToJar);

but I only want to call it if the jar.exe really exists (the jdk is installed). How can I make sure the jar.exe really exists on the machine?

Thanks for your help.

Answer 1

To check weather the file exists or not use File class

    File exeFile = new File(validExeFilePath);
    if(exeFile.exists()){
      Process p = Runtime.getRuntime().exec("jar.exe -xf " + completePathToJar);
    }