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What is the class diagram ?

Class diagrams are bassically use for explain the classes in the terms of diagram.It serve two purposes: 
> to represent the static state of classes and 
> to exploit.
           the relationships between those classes. In the early stages of the software development life cycle, it is important to note that the class diagram model attempts not only to define the public interface for each class but to define the associations, aggregations, and
generalizations defined between the individual classes.

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

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

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

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

What is output of following code package r4r.co.in.core.java; public class HelloWorld { static int i = 0; public static void main(String args[]) { System.out.println(i); display(); } void display(){ i=90; System.out.println(i); } }

What is output of following code package r4r.co.in.core.java; public class HelloWorld { static int i = 0; public static void main(String args[]) { System.out.println(i); display(); } static void display(){ i=90; System.out.println(i); } }

What is output of following code package r4r.co.in.core.java; public class HelloWorld { static int i = 0; public static void main(String args[]) { System.out.println(i); display(); } static void display(){ int i=0; i=90; System.out.println(i); } }

What is output of following code package r4r.co.in.core.java; public class HelloWorld { static int i = 0; public static void main(String args[]) { System.out.println(i); display(); HelloWorld h=new HelloWorld(); h.display(); } static void display(){ int i=0; i=90; System.out.println(i); } }

What is output of following code package r4r.co.in.core.java; public class HelloWorld { static int i = 0; public static void main(String args[]) { System.out.println(i); HelloWorld h=new HelloWorld(); h.display(); } void display(){ int i=0; i=90; System.out.println(i); } }

What is output of following code package r4r.co.in.core.java; public class HelloWorld { static int i = 0; public static void main(String args[]) { System.out.println(i); display(); HelloWorld h=new HelloWorld(); h.display(); } void display(){ int i=0; i=90; System.out.println(i); } }

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