Java Runtime.getRuntime(): getting output from executing a command line program

I’m using the runtime to run command prompt commands from my Java program. However, I’m not aware of how I can get the output the command returns. Here is my code: Runtime rt = Runtime.getRuntime(); String[] commands = {“system.exe”, “-send” , argument}; Process proc = rt.exec(commands); I tried doing System.out.println(proc); but that did not return … Read more

What is the C runtime library?

What actually is a C runtime library and what is it used for? I was searching, Googling like a devil, but I couldn’t find anything better than Microsoft’s: “The Microsoft run-time library provides routines for programming for the Microsoft Windows operating system. These routines automate many common programming tasks that are not provided by the … Read more

java.lang.NoClassDefFoundError: Could not initialize class XXX

public class PropHolder { public static Properties prop; static { //code for loading properties from file } } // Referencing the class somewhere else: Properties prop = PropHolder.prop; class PropHolder is a class of my own. The class resides in the same JAR file of the main class. So that should not because any JAR … Read more

How to find where a method is defined at runtime?

We recently had a problem where, after a series of commits had occurred, a backend process failed to run. Now, we were good little boys and girls and ran rake test after every check-in but, due to some oddities in Rails’ library loading, it only occurred when we ran it directly from Mongrel in production … Read more

Runtime vs. Compile time

What is the difference between run-time and compile-time? 26 Answers 26 The difference between compile time and run time is an example of what pointy-headed theorists call the phase distinction. It is one of the hardest concepts to learn, especially for people without much background in programming languages. To approach this problem, I find it … Read more

Why am I still getting a cannot find Java SE Runtime Environment?

I want to thank @almas-shaikh for this answer. His comment made me check over C:\Program Files\Java\jdk1.7.0_71\jre\bin and see that there was no java.dll library file inside that directory. What I did next was just deleting the jdk and reinstalling it via jdk-7u71-windows-x64.exe executable. Now when I execute java -home, I get  Now the part I … Read more