JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to connect to a URL and read its content in Java?


Description:

You can read content of an URL object aftter connecting to it. You have to call the URL's openStream() method to get a stream from which you can read the contents of the URL. The openStream() method returns a java.io.InputStream object, so reading from a URL is as easy as reading from an input stream. Below example shows sample code:


Code:
package com.myjava.url;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

public class MyUrlContentRead {

    public static void main(String a[]){
    
        URL url = null;
        InputStream is = null;
        try {
            url = new URL("http://www.java2novice.com");
            is = url.openStream();
            byte[] b = new byte[8];
            while(is.read(b) != -1){
                System.out.print(new String(b));
            }
        }  catch (MalformedURLException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}
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  14. How to get all IP addresses of a host?
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What is fail-fast in java?
A fail-fast system is nothing but immediately report any failure that is likely to lead to failure. When a problem occurs, a fail-fast system fails immediately. In Java, we can find this behavior with iterators. Incase, you have called iterator on a collection object, and another thread tries to modify the collection object, then concurrent modification exception will be thrown. This is called fail-fast.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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