IN JAVA

public static boolean isZero (int a, int b)

The method isZero returns true if either of the arguments is equal to 0 otherwise returns false.

public static boolean isNegative (int a, int b)

The method isNegative returns true if either of the arguments is negative, otherwise returns false.

Public static int toFahrenheit (int celsius)

The method toFahrenheit returns the given Celsius temperature (a positive or negative integer) after being converted to Fahrenheit and truncated to an integer, using this formula:

Fahrenheit = (9/5) * Celsius + 32

Test your code with some commonly known Fahrenheit to Celsius conversions, for example:

32 F = 0 C 212 F = 100 C

public static String multString (String s, int n)

The method multString returns the given string "multipled" n times. for example:

s = "Hello" n=3 would return "HelloHelloHello"

test code will always pass an int n >= 1 and valid string