public static void main(String[] args) {

System.out.println("\n1. Variables creation and values console output");

byte win = 10;

short ram = 16;

int bit = 64;

long swapFile = 12596;

float processor = 2.50f;

double ver = 19044.1826;

char someChar = 'y';

boolean task = true;

System.out.println("byte - Windows " + win);

System.out.println("short - " + ram + " GB ram");

System.out.println("integer - " + bit + "-bit version of Windows");

System.out.println("long - " + swapFile + " mB swap file");

System.out.println("float - " + processor + " GHz processor");

System.out.println("double - OS version" + ver);

System.out.println("char - random character" + someChar);

System.out.println("boolean - is task1 complete " + task);

System.out.println("\n2. Cost calculation for discount items");

double penPrice = 100f;

double bookPrice = 200f;

double discount = (penPrice + bookPrice) * 0.11;

double discountPrice = (penPrice + bookPrice) - discount;

System.out.println("Discount amount: " + discount);

System.out.println("Total amount after discount: " + discountPrice);

System.out.println("\n3. Console output of JAVA");

System.out.println(" J a v v a");

System.out.println(" J a a v v a a");

System.out.println("J J aaaaa V V aaaaa");

System.out.println(" JJ a a V a a");

System.out.println("\n4. Display min and max values for numeric data types");

byte byteVal = Byte.MAX_VALUE;

System.out.println("initial num for byte - " + byteVal + ", incremented num for byte - " + (++byteVal)

+ ", decremented num for byte - " + (--byteVal));

short shortVal = Short.MAX_VALUE;

System.out.println("initial num for short - " + shortVal + ", incremented num for short - " + (++shortVal)

+ ", decremented num for short - " + (--shortVal));

long longVal = Long.MAX_VALUE;

System.out.println("initial num for long - " + longVal + ", incremented num for long - " + (++longVal)

+ ", decremented num for long - " + (--longVal));

System.out.println("\n5. Swapping variable values");

int x = 2;

int y = 5;

System.out.print("Part I, third variable. Initial values: first variable = " + x + ", second variable = "+ y);

int temp = x;

x = y;

y = temp;

System.out.println(". New values after exchange: first variable = " + x + ", second variable = " + y);

System.out.print("Part II, math. Initial values: first variable = " + x + ", second variable = " + y);

x += y;

y = x - y;

x -= y;

System.out.println(". New values after exchange: first variable = " + x + ", second variable = " + y);

System.out.print("Part III, bitwise operation. Initial values: first variable = "

+ x + ", second variable = " + y);

x ^= y;

y ^= x;

x ^= y;

System.out.println(". New values after exchange: first variable = " + x + ", second variable = " + y);

System.out.println("\n6. Console output of symbols and their codes");

char charA = 35;

char charB = 38;

char charC = 64;

char charD = 94;

char charE = 95;

System.out.println((int) charA + " - " + charA);

System.out.println((int) charB + " - " + charB);

System.out.println((int) charC + " - " + charC);

System.out.println((int) charD + " - " + charD);

System.out.println((int) charE + " - " + charE);

System.out.println("\n7. Display amount of hundreds, tens and ones in a number");

int num = 123;

int ones = num % 10;

int tens = num / 10 % 10;

int hundreds = num / 100;

System.out.println("Number " + num + " has " + hundreds + " hundreds.");

System.out.println("Number " + num + " has " + tens + " tens.");

System.out.println("Number " + num + " has " + ones + " ones.");

System.out.println("\n8. Console output of ASCII-art");

char slash = 0x002f;

char backSlash = 0x005c;

char underscore = 0x005f;

char rightParentheses = 0x0028;

char leftParentheses = 0x0029;

char space = 0x0020;

System.out.println("" + space + space + space + space + space + slash + backSlash);

System.out.println("" + space + space + space + space + slash + space + space + backSlash);

System.out.println("" + space + space + space + slash + underscore + rightParentheses + space + leftParentheses + backSlash);

System.out.println("" + space + space + slash + space + space + space + space + space + space + backSlash);

System.out.println("" + space + slash + underscore + underscore + underscore + underscore + slash +

backSlash + underscore + underscore + backSlash);

System.out.println("\n9. Product and sum of digits");

num = 345;

ones = num % 10;

tens = num / 10 % 10;

hundreds = num / 100;

int sumDigits = hundreds + tens + ones;

int prodDigits = hundreds * tens * ones;

System.out.println("Sum of digits for " + num + " = " + sumDigits);

System.out.println("Product of digits for " + num + " = " + prodDigits);

System.out.println("\n10. Seconds transformation");

int totalSeconds = 86399;

int hour = totalSeconds / 3600 ;

int minute = (totalSeconds % 3600) / 60;

int second = totalSeconds % 60;

System.out.println(hour + ":" + minute + ":" + second);

}

}