JSSE: How to ignore CertificateException: Couldn't find trusted certificate"?

While testing SecureSocket code, sometimes you would need code to ingore certificate validation.
JSSE provides a simple way to do this by writing your own TrustManager. The below sample code lets you write simple clients ignore certificate validation:

01  02  03 import java.io.InputStream; 04 import java.io.OutputStream; 05  06 import javax.net.ssl.SSLContext; 07 import javax.net.ssl.SSLSocket; 08 import javax.net.ssl.SSLSocketFactory; 09 import javax.net.ssl.TrustManager; 10 import javax.net.ssl.X509TrustManager; 11  12 /* 13  * This example demostrates how to use a SSLSocket as client to 14  * send and recieve Data while ignoring the certificate validation. 15  */ 16  17 public class SSLClient { 18  19     public static void main(String[] args) throws Exception { 20  21         // Create a trust manager that does not validate certificate chains like the default TrustManager 22         TrustManager[] trustAllCerts = new TrustManager[]{ 23             new X509TrustManager() { 24  25                 public java.security.cert.X509Certificate[] getAcceptedIssuers() { 26                     return null; 27                 } 28  29                 public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) { 30                     //No need to implement. 31                 } 32  33                 public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) { 34                     //No need to implement. 35                 } 36             } 37         }; 38  39         // Let us create the factory where we can set some parameters for the connection 40         SSLContext sc = SSLContext.getInstance("SSL"); 41         sc.init(null, trustAllCerts, new java.security.SecureRandom()); 42  43         SSLSocketFactory factory =sc.getSocketFactory(); 44         SSLSocket socket =(SSLSocket)factory.createSocket(args[0], Integer.parseInt(args[1])); 45         socket.startHandshake(); 46  47  48         OutputStream out = socket.getOutputStream(); 49         InputStream in = socket.getInputStream(); 50  51         //Do- Fun stuff with I/O classes. 52     } 53 }