what is pulse code modulation?

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Pulse code modulation is decribed as a PCM .Now a Days we know its a digital world In this time it is the heart of technology in communications . It�s a process in which analog signals are converted to digital form. The analog signal is represented by a series of pulses and non-pulses. At this stage to fully understand we can refer back to the notes on signals.

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What is output of following code package r4r.co.in.core.java; public class HelloWorld { int i = 0; public static void main(String args[]) { System.out.println(i); new HelloWorld(); } static { static int i; i = 10; System.out.println(i); } }
What is output of following code package r4r.co.in.core.java; public class HelloWorld { int i = 0; public static void main(String args[]) { System.out.println(i); new HelloWorld(); } static { final static int i=0; i = 10; System.out.println(i); } }
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