List of usage examples for java.lang Class isInstance
@HotSpotIntrinsicCandidate public native boolean isInstance(Object obj);
From source file:org.jruby.rack.mock.WebUtils.java
/** * Return an appropriate request object of the specified type, if available, * unwrapping the given request as far as necessary. * @param request the servlet request to introspect * @param requiredType the desired type of request object * @return the matching request object, or {@code null} if none * of that type is available/* w w w . ja v a 2s.c o m*/ */ @SuppressWarnings("unchecked") public static <T> T getNativeRequest(ServletRequest request, Class<T> requiredType) { if (requiredType != null) { if (requiredType.isInstance(request)) { return (T) request; } else if (request instanceof ServletRequestWrapper) { return getNativeRequest(((ServletRequestWrapper) request).getRequest(), requiredType); } } return null; }
From source file:org.jruby.rack.mock.WebUtils.java
/** * Return an appropriate response object of the specified type, if available, * unwrapping the given response as far as necessary. * @param response the servlet response to introspect * @param requiredType the desired type of response object * @return the matching response object, or {@code null} if none * of that type is available/*w w w. j ava 2 s . c om*/ */ @SuppressWarnings("unchecked") public static <T> T getNativeResponse(ServletResponse response, Class<T> requiredType) { if (requiredType != null) { if (requiredType.isInstance(response)) { return (T) response; } else if (response instanceof ServletResponseWrapper) { return getNativeResponse(((ServletResponseWrapper) response).getResponse(), requiredType); } } return null; }
From source file:net.pms.newgui.LooksFrame.java
/** * Safely checks whether a particular look and feel class is set. * * @param lnf//from w w w. java 2 s .co m * @param lookAndFeelClassPath * @return whether the incoming look and feel class is set */ private static boolean isParticularLaFSet(LookAndFeel lnf, String lookAndFeelClassPath) { // as of Java 10, com.sun.java.swing.plaf.windows.WindowsLookAndFeel // is no longer available on macOS // thus "instanceof WindowsLookAndFeel" directives will result // in a NoClassDefFoundError during runtime if (lnf == null) { return false; } else { try { Class c = Class.forName(lookAndFeelClassPath); return c.isInstance(lnf); } catch (ClassNotFoundException cnfe) { // if it is not possible to load the Windows LnF class, the // given lnf instance cannot be an instance of the Windows // LnF class return false; } } }
From source file:org.paxml.util.ReflectUtils.java
/** * Coerce object type./* w w w .j a v a 2 s .c om*/ * * @param <T> * the expected type * @param from * from object * @param expectedType * to object type * @return the to object */ public static <T> T coerceType(Object from, Class<? extends T> expectedType) { if (from == null) { return null; } Object targetValue = null; if (expectedType.isInstance(from)) { targetValue = from; } else if (expectedType.isEnum()) { for (Object e : expectedType.getEnumConstants()) { if (from.toString().equalsIgnoreCase(e.toString())) { targetValue = e; break; } } if (targetValue == null) { throw new PaxmlRuntimeException( "No enum named '" + from + "' is defined in class: " + expectedType); } } else if (List.class.equals(expectedType)) { targetValue = new ArrayList(); collect(from, (Collection) targetValue, true); } else if (Set.class.equals(expectedType)) { targetValue = new LinkedHashSet(); collect(from, (Collection) targetValue, true); } else if (isImplementingClass(expectedType, Collection.class, false)) { try { targetValue = expectedType.newInstance(); } catch (Exception e) { throw new PaxmlRuntimeException(e); } collect(from, (Collection) targetValue, true); } else if (Iterator.class.equals(expectedType)) { List list = new ArrayList(); collect(from, list, true); targetValue = list.iterator(); } else if (isImplementingClass(expectedType, Coerceable.class, false)) { try { Constructor c = expectedType.getConstructor(Object.class); targetValue = c.newInstance(from); } catch (Exception e) { throw new PaxmlRuntimeException(e); } } else if (from instanceof Map) { return mapToBean((Map) from, expectedType); } else { targetValue = ConvertUtils.convert(from.toString(), expectedType); } return (T) targetValue; }
From source file:com.gamesalutes.utils.ByteUtils.java
/** * Deserializes a string serialized using {@link #stringSerialize}. * // w w w .j ava2 s. co m * @param data the serialized string data * @param type the type of the deserialized object * @throws Exception if error occurs during deserialization */ public static <T> T stringDeserialize(String data, Class<T> type) throws Exception { if (MiscUtils.isEmpty(data)) return null; // decode the Base64 String into the raw object bytes byte[] bytes = Base64.decodeBase64(data.getBytes("UTF-8")); Object object = ByteUtils.readObject(bytes); if (!type.isInstance(object)) { throw new IllegalArgumentException( MiscUtils.getClassName(object) + " : " + object + " is not: " + type.getName()); } return (T) object; }
From source file:org.apache.taverna.databundle.DataBundles.java
private static <T> Stream<T> resolveItemAsStream(Path path, Class<T> type, ResolveOptions options) throws UncheckedIOException { try {// www .jav a 2s . c om Object value = resolve(path, options); if (type.isInstance(value)) { return Stream.of(type.cast(value)); } return Stream.empty(); } catch (IOException e) { throw new UncheckedIOException(e); } }
From source file:info.magnolia.jcr.util.NodeUtil.java
public static boolean isWrappedWith(Node node, Class<? extends DelegateNodeWrapper> wrapper) { if (wrapper.isInstance(node)) { return true; }/*from ww w. j a v a 2s. c om*/ if (node instanceof DelegateNodeWrapper) { return isWrappedWith(((DelegateNodeWrapper) node).getWrappedNode(), wrapper); } return false; }
From source file:org.web4thejob.web.util.ZkUtil.java
@SuppressWarnings("unchecked") public static <T extends org.web4thejob.web.panel.Panel> void appendPanelsOfType(Component parent, Class<T> panelType, List<T> list) { for (Component child : parent.getChildren()) { if (panelType.isInstance(child.getAttribute(OWNING_PANEL))) { list.add((T) child.getAttribute(OWNING_PANEL)); }/*w w w.ja va2 s.c o m*/ appendPanelsOfType(child, panelType, list); } }
From source file:com.amalto.workbench.compare.Utilities.java
private static ArrayList internalGetResources(ISelection selection, Class type) { ArrayList tmp = new ArrayList(); if (selection instanceof IStructuredSelection) { Object[] s = ((IStructuredSelection) selection).toArray(); for (int i = 0; i < s.length; i++) { IResource resource = null;/*from w ww . j a va 2 s .c o m*/ Object o = s[i]; if (type.isInstance(o)) { resource = (IResource) o; } else if (o instanceof ResourceMapping) { try { ResourceTraversal[] travs = ((ResourceMapping) o) .getTraversals(ResourceMappingContext.LOCAL_CONTEXT, null); if (travs != null) { for (int k = 0; k < travs.length; k++) { IResource[] resources = travs[k].getResources(); for (int j = 0; j < resources.length; j++) { if (type.isInstance(resources[j]) && resources[j].isAccessible()) tmp.add(resources[j]); } } } } catch (CoreException ex) { log.error(ex.getMessage(), ex); } } else if (o instanceof IAdaptable) { IAdaptable a = (IAdaptable) o; Object adapter = a.getAdapter(IResource.class); if (type.isInstance(adapter)) resource = (IResource) adapter; } if (resource != null && resource.isAccessible()) tmp.add(resource); } } return tmp; }
From source file:com.helpinput.core.Utils.java
@SuppressWarnings("unchecked") public static <T> T getInstance(Object o, Class<T> clz) { if (o == null) return null; if (clz.isInstance(o)) return (T) o; return null;/*w ww .ja v a2 s. c o m*/ }