This commit is contained in:
Steven Tracey 2023-02-15 10:11:56 -05:00
parent 5073cfb137
commit c884acd6e2
4 changed files with 107 additions and 3 deletions

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@ -0,0 +1,47 @@
package tech.nevets;
import java.util.Scanner;
public class STNumericTypes {
static final int NUMBER = 2;
static final int SCORE1 = 100;
static final int SCORE2 = 95;
static final int BOILING_IN_F = 212;
public static void main(String[] args) {
int fToC;
double average;
String output;
Scanner sc = new Scanner(System.in);
average = (double) (SCORE1 + SCORE2) / NUMBER;
output = SCORE1 + " and " + SCORE2 + " have an average of " + average;
System.out.println(output);
fToC = Math.round((5 / 9F) * (BOILING_IN_F - 32));
output = BOILING_IN_F + " in Fahrenheit is " + fToC + " in Celsius.";
System.out.println(output);
System.out.println();
System.out.print("Enter First Name: ");
String firstName = sc.nextLine();
System.out.print("Enter Last Name: ");
String lastName = sc.nextLine();
System.out.println(firstName + " " + lastName);
System.out.println();
char firstInitial = firstName.charAt(0);
System.out.println(firstInitial);
String nameUpper = firstName.toUpperCase();
System.out.println(nameUpper);
System.out.println();
System.out.println("Enter Sphere Diameter: ");
int sphereDiameter = sc.nextInt();
float sphereRadius = sphereDiameter / 2.0F;
float sphereVolume = (float) ((4 / 3F) * Math.PI * (sphereRadius * sphereRadius * sphereRadius));
System.out.println(sphereVolume);
}
}

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// This program will demonstrate the function of numeric operators
// Class declarator
// Main method head
Create Scanner Object
Create constant ints for NUMBER = 2, SCORE1 = 100, SCORE2 = 95, and BOILING_IN_F = 212
Create int named fToC
Create double named average
Create String named output
Set average to SCORE1 plus SCORE2, all divided by NUMBER
Set output to SCORE1 appending " and " appending average appending " have an average of " appending average
Print output to the console
// This converts Fahrenheit to Celsius
Set fToC to 5 divided by 9 all times (BOILING_IN_F minus 32)
Set output to BOILING_IN_F appending " in Fahrenheit is " appending fToC appending " in Celsius."
Print output to the console
Print a newline to the console
// Reads user's first and last name, then appends them
Print "Enter First Name: " to console
Use previously created scanner object to read the String, setting it to variable firstName
Print "Enter Last Name: " to console
Use scanner object to read the String, setting it to variable lastName
Print firstName appending lastName to the console
Print newline to the console
Use the String method charAt passing in 0 to get the first char in the first name, setting that to a new char variable named firstInitial
Print firstInitial to the console
Use the String method toUpperCase, setting that to a new String variable named nameUpper
Print nameUpper to the console
Print newline to the console
Print "Enter Sphere Diameter: " to console
Use scanner object to get the entered int, setting it to a new variable named sphereDiameter
Create new float named sphereRadius, setting it to shpereDiameter divided by 2.0F
Create a new float named sphereVolume, setting it to (4 / 3F) * Math.PI * (sphereRadius * sphereRadius * sphereRadius)
Print sphereVolume to the console

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@ -1,5 +1,9 @@
package tech.nevets;
/**
* @author Steven Tracey
*/
public class STWelcome {
public static void main(String[] args) {
System.out.println("Welcome to Java Programming.");
@ -7,8 +11,8 @@ public class STWelcome {
System.out.println("will be awesome!");
System.out.println("I promise not to cheat in this class");
System.out.println("If caught, I will be withdrawn with an F grade");
System.out.println("Como estas hoy");
System.out.println("J'espere que tu aimes ce cours");
System.out.println("Byona gironata");
System.out.println("Como estas hoy"); // Lang: Spanish
System.out.println("J'espere que tu aimes ce cours"); // Lang: French
System.out.println("Byona gironata"); // Lang: Italian
}
}

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package tech.nevets;
public class Test {
public static void main(String[] args) {
int i = 5;
System.out.println("i is 5, next int is prefixed");
System.out.println(++i);
i = 5;
System.out.println("i is 5, next int is postfixed");
System.out.println(i++);
}
}