public class TwoStringVariables {
public static void main(String[] args) {
String name = "Jose", school="Jose Rizal University";
System.out.println(" Hello " + name + ",");
System.out.println(" Your School is " + school + ",");
System.out.println(" Bonifacio attended " + school + " too! ");
}
}
Hello World
public class Mico {
public static void main(String[] args) {
System.out.println("Hello World!");
}
}
MESSAGE
import javax.swing.JOptionPane;
public class VariableDeclaration {
public static void main(String args[])
{
JOptionPane.showMessageDialog(null,
"Hello,\nNicolle Plagere,\nthe one who create\nthis program is\nloving you
so much." );
System.exit(0);
}
public class VariableDeclaration{
public static void main(String args[]) {
char c='M';
byte numberByte = 1;
int numberInteger =1434414344;
short numberShort = 14344;
long numberLong = 1234567890;
float numberFloat = 1414;
double numberDouble = 3.1416;
boolean result = true;
String message = "Welcome to JRU!";
System.out.println("Character = " + c );
System.out.println("Byte = " + numberByte );
System.out.println("Integer = " + numberInteger );
System.out.println("Short = " + numberShort );
System.out.println("Long = " + numberLong );
System.out.println("Float = " + numberFloat );
System.out.println("Double = " + numberDouble );
System.out.println("Result = " + result );
System.out.println("Message = " + message );
}
}
public class SampleOne {
public static void main(String[] args) {
String status = "" ;
double examGrade = 80;
if(examGrade >= 60) {
status = "Passed";
}else {
status = "Failed";
System.out.println("status= "+ status);
status=(examGrade>=60) ? "Passed": "Failed";
System.out.println("status= "+ status);
2. Create a program that will input the following data: Employee Number, Employee LastName,
Employee FirstName, Rate per hour, Number of Hours Worked. Compute and output the Gross Pay, SSS
Deduction, Tax Withhold, Total Deduction, Net Pay. ( Use JOptionPane)
import javax.swing.JOptionPane;
public class InputJOptionPane {
public static void main(String args[]) {
/* GP = Gross Pay
SD = SSS Deduction
T = Tax Withhold
TD = Total Deduction
EN = Employee Number
ELN = Employee Last Name
EFN = Employee First Name
Rph/R = Rate per hour
NHW = Number of Hours Worked
NT = Net Pay
*/
String EN = JOptionPane.showInputDialog("Enter Employee Number: ");
String EFN = JOptionPane.showInputDialog("Enter Employee First Name: ");
String ELN = JOptionPane.showInputDialog("Enter Employee Last Name: ");
String Rph = JOptionPane.showInputDialog("Enter Employee Rate per hour: ");
float R= float.valueOf(Rph);
String NHW = JOptionPane.showInputDialog("Enter Number of Hours Worked: ");
float Nw= float.valueOf(NHW);
float GP = Nw * R;
double SD = GP * .05;
double T = GP * .10;
double TD = SD + T;
double NP = GP - TD;
JOptionPane.ShowMessageDialog(null,
"Employee Number: " + EN + "\nEmployee First Name: " + EFN + "/nEmployee Last Name: " + ELN +
"\nEmployee Rate per hour: " + R + "\nNumber of hours worked: " + Nw + "\nGross Pay: " + GP + "\
nSSS Deduction : " + SD +
"\nTax Withhold: " + T + "\nTotal Deduction: "+ TD);
}
1. This program computes the interest earned on 17,000 pesos with an interest rate of .70 a year. The
interest and the value of the investment after one year are printed to standard output.
public class PrelimPT6 {
public static void main(String[] args) {
/* VI = Value of Investment
IR = Interest Rate
I = Interest earned in one year
VIOY = Value of Investment after One Year
*/
int VI = 17000;
double IR = .70;
double I;
I = VI * IR * 1;
double VIOY = VI*(1 + IR);
System.out.println("The Interest is: " + I);
System.out.println("The Value of Investment after one year is: " + VIOY);
3. Create a program that will input for the following data: (Using Scanner)
Student Name, Course
Grade in Quiz, Seatwork, Laboratory Exercises and Prelim
Compute and output the Prelim Grade.
Prelim Grade = Quiz * 25% + Seatwork * 20% + Lab. Exercise * 25% + Prelim Exam
* 30%
import java.util.Scanner;
public class Main
{
public static void main(String[] args)
{
Scanner keyboard = new Scanner( System.in );
System.out.println("Enter Student Name: ");
String SN = keyboard.nextLine();
System.out.println("Enter Course: ");
String C = keyboard.nextLine();
System.out.println("Enter Quiz grade: ");
int Q = keyboard.nextInt();
System.out.println("Enter Seatwork grade: ");
int S = keyboard.nextInt();
System.out.println("Enter Laboratory Exercise grade: ");
int LE = keyboard.nextInt();
System.out.println("Enter Prelim Exam grade: ");
int PE = keyboard.nextInt();
double PG = (Q * 0.25) + (S * 0.20) + (LE * 0.25) + (PE * 0.30);
System.out.println("Your Prelim Grade is: " + PG);
if(PG >= 75){
System.out.println("Congratulations " + SN + " you passed!");
}else{
System.out.println("Sorry " + SN + " you failed.");
}
}
}
//Getting Input using BufferedReader Class
import java.io.*;
public class InputBufferedReader{
public static void main(String[] args) throws IOException
{
String mystr;
System.out.println("Getting Input Using BufferredReader Class");
System.out.println("What is your Name?");
BufferedReader dataIn = new BufferedReader (new
InputStreamReader(System.in));
mystr = dataIn.readLine();
System.out.println("Hello, " + mystr + ",");
System.out.println("What is your Favorite Food");
mystr = dataIn.readLine();
System.out.println("I Like " + mystr + " too ");
}
}
2. Use JOptionPane
import javax.swing.JOptionPane;
public class InputJOptionPane
{
public static void main (String[] args)
{
double pi = 3.151519;
String radius =JOptionPane.showInputDialog ("Enter the Circle's Radius:");
double r = Double.valueOf(radius); //Convets String to Double
double area = pi * r * r;
double circumference = 2 * pi * r;
JOptionPane.showMessageDialog(null, "The Circle's Radius is: " + radius + "\n
THE CIRCLE'S AREA IS: " + area
+ "\n THE CIRCLE'S CIRCUMFERENCE IS: " + circumference);
}
}
3. Use Scanner
