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  Java Static Initializer Block Hackerrank Solution in Java Problem-9:- Static initialization blocks are executed when the class is loaded, and you can initialize static variables in those blocks. It's time to test your knowledge of  Static initialization blocks . You can read about it  here. You are given a class  Solution  with a  main  method. Complete the given code so that it outputs the area of a parallelogram with breadth   and height  . You should read the variables from the standard input. If   or    , the output should be  "java.lang.Exception: Breadth and height must be positive"  without quotes. Input Format There are two lines of input. The first line contains  : the breadth of the parallelogram. The next line contains  : the height of the parallelogram. Constraints Output Format If both values are greater than zero, then the  main  method must output the area of the  pa...

 Java End-of-file Hackerrank Solution in Java Problem-8:- The challenge here is to read   lines of input until you reach  EOF , then number and print all   lines of content. Hint:  Java's  Scanner.hasNext()  method is helpful for this problem. Input Format Read some unknown   lines of input from  stdin(System.in)  until you reach  EOF ; each line of input contains a non-empty  String . Output Format For each line, print the line number, followed by a single space, and then the line content received as input. Sample Input Hello world I am a file Read me until end-of-file. Sample Output 1 Hello world 2 I am a file 3 Read me until end-of-file. Solution:- import   java . io .*; import   java . util .*; import   java . text .*; import   java . math .*; import   java . util . regex .*; import   java . util . Scanner ; public   class   Solution   {      pu...

 Java Datatypes Hackerrank solution in Java Problem-7:- Java has 8 primitive data types;  char, boolean, byte, short, int, long, float, and double . For this exercise, we'll work with the primitives used to hold integer values ( byte, short, int,  and  long ): A  byte  is an 8-bit signed integer. A  short  is a 16-bit signed integer. An  int  is a 32-bit signed integer. A  long  is a 64-bit signed integer. Given an input integer, you must determine which primitive data types are capable of properly storing that input. To get you started, a portion of the solution is provided for you in the editor. Reference:   https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html Input Format The first line contains an integer,  , denoting the number of test cases. Each test case,  , is comprised of a single line with an integer,  , which can be arbitrarily large or small. Output Format For each input vari...