native

What is the native keyword in Java for?

依然范特西╮ 提交于 2019-12-16 19:54:48
问题 While playing this puzzle (It's a Java keyword trivia game), I came across the native keyword. What is the native keyword in Java used for? 回答1: The native keyword is applied to a method to indicate that the method is implemented in native code using JNI (Java Native Interface). 回答2: Minimal runnable example Main.java public class Main { public native int square(int i); public static void main(String[] args) { System.loadLibrary("Main"); System.out.println(new Main().square(2)); } } Main.c

Use Java to start a Windows exe

核能气质少年 提交于 2019-12-13 22:44:48
问题 I want to find out how to open any exe in Windows using Java code. I have searched Google before and they only show me part of the code that they use, I think, because it doesn't seem to compile. I have downloaded JDK 7 to compile. I don't use Eclipse at the moment and also explaining what I had to do to get it to work in detail would help a lot. to what Sri Harsha Chilakapati said: would i need to create a class for the code? Thanks to those who answered but i didn't quite get what you meant

Split string on non-alphanumerics in PHP? Is it possible with php's native function?

泪湿孤枕 提交于 2019-12-13 20:05:13
问题 I was trying to split a string on non-alphanumeric characters or simple put I want to split words. The approach that immediately came to my mind is to use regular expressions. Example: $string = 'php_php-php php'; $splitArr = preg_split('/[^a-z0-9]/i', $string); But there are two problems that I see with this approach. It is not a native php function, and is totally dependent on the PCRE Library running on server. An equally important problem is that what if I have punctuation in a word

Is it possible to start a native application from Adobe Air?

我的未来我决定 提交于 2019-12-13 19:43:14
问题 Is it possible to start a native application/service from Adobe Air? I guess this is basically a duplicate of Running a native program in Adobe AIR, but that question is a year old so hopefully the answer is now "yes"! 回答1: Starting from AIR 2.0, yes - NativeProcessInfo. It will be supported if your application supports extendedDesktop profile and is compiled as native installer. 来源: https://stackoverflow.com/questions/5032035/is-it-possible-to-start-a-native-application-from-adobe-air

jni - Slow processing in native

ぃ、小莉子 提交于 2019-12-13 10:20:01
问题 Switching to native to get more performance and processing speed, but unfortunately, my app is too slow. Also, when loading high-resolution images, the app crashes. Here is my full code for you to tell me how to improve it. java code: package com.example.invert; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Color; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import

UnsatisfiedLink error : opencv_java2411.dll already loaded in another classloader in glass fish

本小妞迷上赌 提交于 2019-12-13 08:54:30
问题 I am implementing a web application for face recognition in java using opencv. While I am running the code for face recognition I am getting errors like java.lang.UnsatisfiedLinkError: Native Library F:\opencv\build\java\x86\opencv_java2411.dll already loaded in another classloader i had done several methods avaliable over internet such as checking whether the class is loaded or not making the system.loadlibrary as static block adding path to environment variable and so on but the error

C++ manipulating mdb database

落花浮王杯 提交于 2019-12-13 07:45:12
问题 I want to create an app based on the content of a .mdb file, I searched for libraries to do that in native but they all needed requirements, I want a way to read these files using native code(C++) only, so I could use the library in multiple platforms. Thx, Regards 回答1: The .mdb file format is specific to the Microsoft Access ("Jet") database engine, which is proprietary and specific to Windows. (Furthermore, it is an evolving file-format, although it does not seem to continue to be in active

AccessViolationException when Marshal.PtrToStructure fires

▼魔方 西西 提交于 2019-12-13 04:33:59
问题 i am trying to use a native dll from VS2012 C# env. i have a weird scenario: case1: IntPtr p_stat = IntPtr.Zero; dcUe.dcUeGetMacStats(_helper.Handle, out p_stat);//native function call thatallocates memory and points the pointer to it MacStatistics stats = (MacStatistics)Marshal.PtrToStructure(p_stat, typeof(MacStatistics)); with the following Pinvoke wrapper: [DllImport("dcc.dll",CharSet=CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)] public static extern UInt32 dcUeGetMacStats

Is it safe to copy a reference to a native JavaScript method?

空扰寡人 提交于 2019-12-13 03:46:43
问题 For example var w = document.getElementById; var b = w('header'); var c = w('footer'); var d = w('body'); Edit: Semicolons are another one of those big arguments. I thought I would edit the question for fun. Edit: Responses to Andrey's comments found on his answer. "How does copying reference make it more effective with JS compilers?" Response: JS compilers are to shorten and/or obfuscate code. If there were 40 calls to document.getElementById(..) , it would be much more compact if they