> For the complete documentation index, see [llms.txt](https://ref.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ref.gitbook.io/notes/java/untitled.md).

# Untitled

`compile group: 'org.slf4j', name: 'slf4j-api', version: '2.0.0-alpha1'` -> `slf4j-api-2.0.0-alpha1.jar`

testCompile group: 'org.slf4j', name: 'slf4j-simple', version: '2.0.0-alpha1'

This <https://crunchify.com/how-to-add-resources-folder-properties-at-runtime-into-intellijs-classpath-adding-property-files-to-classpath/> help me added a resources folder in intellij project

{% embed url="<https://www.pixelstech.net/article/1549365534-The-difference-between-System-load-and-System-loadLibrary-in-Java#comment_zone>" %}

Get OS type:

```java
  private static final int osType;
  
  String osName = System.getProperty("os.name");
  if (osName.startsWith("Linux")) {
      if ("dalvik".equals(System.getProperty("java.vm.name").toLowerCase())) {
          osType = ANDROID;
          // Native libraries on android must be bundled with the APK
          System.setProperty("jna.nounpack", "true");
      }
      else {
          osType = LINUX;
      }
  }
  else if (osName.startsWith("AIX")) {
      osType = AIX;
  }
  else if (osName.startsWith("Mac") || osName.startsWith("Darwin")) {
      osType = MAC;
  }
  else if (osName.startsWith("Windows CE")) {
      osType = WINDOWSCE;
  }
  else if (osName.startsWith("Windows")) {
      osType = WINDOWS;
  }
  else if (osName.startsWith("Solaris") || osName.startsWith("SunOS")) {
      osType = SOLARIS;
  }
  else if (osName.startsWith("FreeBSD")) {
      osType = FREEBSD;
  }
  else if (osName.startsWith("OpenBSD")) {
      osType = OPENBSD;
  }
  else if (osName.equalsIgnoreCase("gnu")) {
      osType = GNU;
  }
  else if (osName.equalsIgnoreCase("gnu/kfreebsd")) {
      osType = KFREEBSD;
  }
  else if (osName.equalsIgnoreCase("netbsd")) {
      osType = NETBSD;
  }
  else {
      osType = UNSPECIFIED;
  }
  boolean hasBuffers = false;
  try {
      Class.forName("java.nio.Buffer");
      hasBuffers = true;
  }
  catch(ClassNotFoundException e) {
  }
  // NOTE: we used to do Class.forName("java.awt.Component"), but that
  // has the unintended side effect of actually loading AWT native libs,
  // which can be problematic
  HAS_AWT = osType != WINDOWSCE && osType != ANDROID && osType != AIX;
  HAS_JAWT = HAS_AWT && osType != MAC;
  HAS_BUFFERS = hasBuffers;
  RO_FIELDS = osType != WINDOWSCE;
  C_LIBRARY_NAME = osType == WINDOWS ? "msvcrt" : osType == WINDOWSCE ? "coredll" : "c";
  MATH_LIBRARY_NAME = osType == WINDOWS ? "msvcrt" : osType == WINDOWSCE ? "coredll" : "m";
  HAS_DLL_CALLBACKS = osType == WINDOWS;
  ARCH = getCanonicalArchitecture(System.getProperty("os.arch"), osType);
  RESOURCE_PREFIX = getNativeLibraryResourcePrefix();
}
```

\`

```java
String osName = System.getProperty("os.name");
```


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