Method classForName

src/bsh/classpath/ClassManagerImpl.java:141–244

@return the class or null

( String name )

		@return the class or null
	*/
	@Override
	public Class classForName( String name )
	{
		// check positive cache
		Class c = (Class)absoluteClassCache.get(name);
		if (c != null )
			return c;

		// check negative cache
		if ( absoluteNonClasses.contains(name) ) {
			if ( Interpreter.DEBUG ) Interpreter.debug("absoluteNonClass list hit: "+name);
			return null;
		}

		if ( Interpreter.DEBUG ) Interpreter.debug("Trying to load class: "+name);

		// Check explicitly mapped (reloaded) class...
		final ClassLoader overlayLoader = getLoaderForClass( name );
		if ( overlayLoader != null ) {
			try {
				c = overlayLoader.loadClass(name);
			} catch ( Exception e ) {
				if ( Interpreter.DEBUG ) Interpreter.debug("overlay loader failed for '" + name + "' - " + e);
			}
			// Should be there since it was explicitly mapped
			// throw an error if c == null)?
		}

		// insure that core classes are loaded from the same loader
		if ((c == null) && name.startsWith(BSH_PACKAGE)) {
			final ClassLoader myClassLoader = Interpreter.class.getClassLoader(); // is null if located in bootclasspath
			if (myClassLoader != null) {
				try {
					c = myClassLoader.loadClass(name);
				} catch (ClassNotFoundException e) {
					// fall through
				} catch (NoClassDefFoundError e) {
					// fall through
				}
			} else {
				try {
					c = Class.forName( name );
				} catch ( ClassNotFoundException e ) {
					// fall through
				} catch ( NoClassDefFoundError e ) {
					// fall through
				}
			}
		}

		// Check classpath extension / reloaded classes
		if ((c == null) && (baseLoader != null)) {
			try {
				c = baseLoader.loadClass(name);
			} catch (ClassNotFoundException e) {
				// fall through
			}
		}