Here you can find the source of isValidUrl(URI uri)
public static boolean isValidUrl(URI uri)
//package com.java2s; /*//from w w w . j a v a 2s . c o m * Copyright (c) 2015 Intel Corporation * * 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.net.MalformedURLException; import java.net.URI; public class Main { public static boolean isValidUrl(URI uri) { try { uri.toURL(); } catch (MalformedURLException | IllegalArgumentException e) { return false; } return true; } }