bundles/org.apache.jasper.glassfish/src/org/apache/jasper/compiler/JspRuntimeContext.java
public ClassLoader getParentClassLoader() {
        ClassLoader parentClassLoader =
                Thread.currentThread().getContextClassLoader();
        if (parentClassLoader == null) {
            parentClassLoader = this.getClass().getClassLoader();
        }
        return parentClassLoader;
    }
public ClassLoader getParentClassLoader() {
        ClassLoader parentClassLoader =
                Thread.currentThread().getContextClassLoader();
        if (parentClassLoader == null) {
            parentClassLoader = this.getClass().getClassLoader();
        }
        return parentClassLoader;
    }
Get the parent class loader.

@return ClassLoader parent