Using ProcessBuilder(java.lang.ProcessBuilder) will solve your problem. Syntax is as follows – ProcessBuilder pb = new ProcessBuilder(“java”, “-jar”, “absolute path upto jar”); Process p = pb.start(); You can redirent input/output/error to/from files as follows File commands = new File(“absolute path to inputs file”); File dirOut = new File(“absolute path to outputs file”); File dirErr = new … Read more
This question somewhat duplicates compile javafx 2.0 manually. This answer is specifically for JavaFX 2 versions before the release of Oracle Java 8. For Oracle JavaFX 8+, the JavaFX runtime is on the classpath, so you don’t need to explicitly add it when compiling or JavaFX running applications. Java includes JavaFX in jdk7u6 and above … Read more
static_cast<T>(e) is equivalent to creating an invented temporary variable v in the following way: T v(e); //where T is an arbitrary type and e is an arbitrary expression. The runtime cost of a static_cast is exactly the cost of the above statement
You can use the unsafe.Sizeof function for this. It returns the size in bytes, occupied by the value you pass into it. Here’s a working example: package main import “fmt” import “unsafe” func main() { a := int(123) b := int64(123) c := “foo” d := struct { FieldA float32 FieldB string }{0, “bar”} fmt.Printf(“a: … Read more
A compile-time dependency is generally required at runtime. In maven, a compile scoped dependency will be added to the classpath on runtime (e.g. in wars they will be copied to WEB-INF/lib). It is not, however, strictly required; for instance, we may compile against a certain API, making it a compile-time dependency, but then at runtime … Read more
For Python 2.x reload(foo) For Python 3.x import importlib import foo #import the module here, so that it can be reloaded. importlib.reload(foo)
Having the class name in string is not enough to be able to create its instance. As a matter of fact you will need full namespace including class name to create an object. Assuming you have the following: string className = “MyClass”; string namespaceName = “MyNamespace.MyInternalNamespace”; Than you you can create an instance of that … Read more
JCI looks fine. This code snippet should be your base: JavaCompiler compiler = new JavaCompilerFactory().createCompiler(“eclipse”); MemoryResourceReader mrr = new MemoryResourceReader(); mrr.add(“resource name string”, yourJavaSourceString.getBytes()); MemoryResourceStore mrs = new MemoryResourceStore(); CompilationResult result = compiler.compile(sources, mrr, mrs); // don’t need the result, unless you care for errors/warnings // the class should have been compiled to your destination … Read more
The reason this compiles interface Furniture {} class Test { public static void main(String[] args) { Furniture f; Cat cat = new Cat(); f = (Furniture)cat; //runtime error } } is that you may very well have public class CatFurniture extends Cat implements Furniture {} If you create a CatFurniture instance, you can assign it … Read more
Ok, this is not simply an update but also an answer so I’m filing it as one. According to all information I could find, the following should theoretically do it: String[] cmd = {“explorer.exe”, “/select,\”C:\New”, “”, “”, “”, “”, “”, “”, “Folder\file.txt\””}; The multiple spaces have been broken into empty strings and the array version … Read more