Skip to main content
Engineering LibreTexts

8.6: Java Examples

  • Page ID
    10715
  • \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)

    Objects

    // This program creates instances of the Temperature class to convert Celsius 
    // and Fahrenheit temperatures.
    //
    // References:
    //     https://www.mathsisfun.com/temperature-conversion.html
    //     https://en.wikibooks.org/wiki/Java_Programming
    
    import java.util.*;
    
    class Main {
        public static void main(String[] args) {
            Temperature temp1 = new Temperature();
            temp1.setCelsius(100.0);
            System.out.println("temp1.celsius = " + temp1.getCelsius().toString());
            System.out.println("temp1.fahrenheit = " + temp1.getFahrenheit().toString());
            System.out.println("");
            
            Temperature temp2 = new Temperature();
            temp2.setFahrenheit(100.0);
            System.out.println("temp2.fahrenheit = " + temp2.getFahrenheit().toString());
            System.out.println("temp2.celsius = " + temp2.getCelsius().toString());
        }
    }
    
    // This class converts temperature between Celsius and Fahrenheit.
    // It may be used by assigning a value to either Celsius or Fahrenheit 
    // and then retrieving the other value, or by calling the ToCelsius or
    // ToFahrenheit methods directly.
    
    class Temperature {
        Double celsius;
        Double fahrenheit;
    
        public Double getCelsius() {
            return celsius;
        }
        
        public void setCelsius(Double value) {
            celsius = value;
            fahrenheit = toFahrenheit(celsius);
        }
    
        public Double getFahrenheit() {
            return fahrenheit;
        }
        
        public void setFahrenheit(Double value) {
            fahrenheit = value;
            celsius = toCelsius(fahrenheit);
        }
    
        public Double toCelsius(Double fahrenheit) {
            return (fahrenheit - 32) * 5 / 9;
        }
        
        public Double toFahrenheit(Double celsius) {
            return celsius * 9 / 5 + 32;
        }
    }
    

    Output

    temp1.celsius = 100.0
    temp1.fahrenheit = 212.0
    
    temp2.fahrenheit = 100.0
    temp2.celsius = 37.77777777777778
    

    References

    • Wikiversity: Computer Programming

    8.6: Java Examples is shared under a CC BY-SA license and was authored, remixed, and/or curated by LibreTexts.

    • Was this article helpful?