Check numeric string

Develop your Java skills by creating a program with greeting and farewell functions. Learn to execute methods effectively from the main function (Main).

Create a Java program that implements two methods for greeting and saying goodbye. The greeting method should have a text parameter.

Create a Java program that implements a function called 'isAlphabetic()' which takes a text parameter from the user and checks if the text contains alphabetic characters from 'a' to 'z', including both uppercase and lowercase.

Explore text manipulation in Java with this intermediate-level exercise. Implement the changeLetter() function to modify a character in a text. Learn practically and enhance your mastery in programming!

Create a Java program that implements a function called "sum" that returns the sum of two integer numbers passed as parameters.

Create a Java program that implements a function called IsNumber that receives a text parameter from the user and check if the text is a number or not.

Create a Java program that serves as a calculator with the ability to add, subtract, multiply, or divide.

Create a program in Java that implements a function called CountSpaces that receives as a parameter a text requested from the user.

Create a Java program that asks the user for a number and save it in a text string.

Create a new version of the program Main parameter calculator where you can return the following error codes from Main.

Create a Java program that implements a function called FindMinMax that receives three parameters, an array of real numbers and two real numbers.

Create a program in Java that implements a function called WriteCenteredUnderline that receives as a parameter a text requested from the user.

Create a Java program that asks the user for 5 integers to store them in an array of integers.

Create a Java program that implements a function called InvertString receive receive a text by parameter and display them in reverse order.

Create a Java program that implements a function called Double to calculate and return double an integer.

Create a Java program that implements a function to check if a string is a palindrome or not.

Create a program in Java that implements a function called SearchGreatestValue that receives as an parameter an array of 5 real numbers requested from the user.

Create a Java program that implements a function called Power and calculate the result of raising an integer to another number.

Create a Java program that implements a function called WriteTitle that writes a text centered on the screen, in capital letters, with additional spaces and with one line above and another below.