Here you can find the source of close(ClassLoader cl)
static void close(ClassLoader cl) throws IOException
//package com.java2s; /*/*from w w w .java2 s . com*/ * Copyright 2018 NAVER Corp. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.Closeable; import java.io.IOException; public class Main { static void close(ClassLoader cl) throws IOException { // for JDK 1.7 if (cl instanceof Closeable) { ((Closeable) cl).close(); } } }