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data from a web page and prints all hyperlinks of the form a href-"link">link text</> Extra credit if your program can follow the links that it finds and find links in those web pages as well. (This is the method that search engines such as Google use to find web sites.) Topic 7.1 Reading Web Pages You can read the contents of a web page with this sequence of commands: String address- "http://horstnann.com/index.htal": URL pagelocation - new URLCaddress); Scanner in ne Scanner (pagelocation.openStreanO): Now simply read the contents of the web page with the Scan- ner in the usual way. The URL constructor and the openstrean method can throw an 10Exception, so you need to tag the nain method with throws 10Exception. (See Section 7.4.3 for more information on the throws clause.) The URL class is contained in the java.net package.

data from a web page and prints all hyperlinks of the form a href-"link">link text</> Extra credit if your program can follow the links that it finds and find links in those web pages as well. (This is the method that search engines such as Google use to find web sites.) Topic 7.1 Reading Web Pages You can read the contents of a web page with this sequence of commands: String address- "http://horstnann.com/index.htal": URL pagelocation - new URLCaddress); Scanner in ne Scanner (pagelocation.openStreanO): Now simply read the contents of the web page with the Scan- ner in the usual way. The URL constructor and the openstrean method can throw an 10Exception, so you need to tag the nain method with throws 10Exception. (See Section 7.4.3 for more information on the throws clause.) The URL class is contained in the java.net package.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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**Using the mechanism described in Special Topic 7.1, write a program that reads all data from a web page and prints all hyperlinks of the form** ```html <a href="link">link text</a> ``` **Extra credit if your program can follow the links that it finds and find links in those web pages as well. (This is the method that search engines such as Google use to find web sites.)** --- **Special Topic 7.1: Reading Web Pages** You can read the contents of a web page with this sequence of commands: ```java String address = "http://horstmann.com/index.html"; URL pageLocation = new URL(address); Scanner in = new Scanner(pageLocation.openStream()); ``` Now simply read the contents of the web page with the Scanner in the usual way. The URL constructor and the openStream method can throw an IOException, so you need to tag the main method with throws IOException. (See Section 7.4.3 for more information on the throws clause.) The URL class is contained in the java.net package.
Transcribed Image Text:**Using the mechanism described in Special Topic 7.1, write a program that reads all data from a web page and prints all hyperlinks of the form** ```html <a href="link">link text</a> ``` **Extra credit if your program can follow the links that it finds and find links in those web pages as well. (This is the method that search engines such as Google use to find web sites.)** --- **Special Topic 7.1: Reading Web Pages** You can read the contents of a web page with this sequence of commands: ```java String address = "http://horstmann.com/index.html"; URL pageLocation = new URL(address); Scanner in = new Scanner(pageLocation.openStream()); ``` Now simply read the contents of the web page with the Scanner in the usual way. The URL constructor and the openStream method can throw an IOException, so you need to tag the main method with throws IOException. (See Section 7.4.3 for more information on the throws clause.) The URL class is contained in the java.net package.
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