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Java Exercises: Display and compute specified expressions

Java Basic: Exercise-9 with Solution

Write a Java program to compute the specified expressions and print the output.

Specified Expression :
(25.5 * 3.5 - 3.5 * 3.5) / (40.5 - 4.5)

Pictorial Presentation:

Java: Display and compute specified expressions

Sample Solution:

Java Code:

public class Exercise9 {
 
    public static void main(String[] arg) {

        System.out.println((25.5 * 3.5 - 3.5 * 3.5) / (40.5 - 4.5));
    }
}

Sample Output:

2.138888888888889

Flowchart:

Flowchart: Display and compute specified expressions

Java Code Editor:

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Java: Tips of the Day

getEnumMap

Converts to enum to Map where key is the name and value is Enum itself.

public static <E extends Enum<E>> Map<String, E> getEnumMap(final Class<E> enumClass) {
    return Arrays.stream(enumClass.getEnumConstants())
            .collect(Collectors.toMap(Enum::name, Function.identity()));
}

Ref: https://bit.ly/3xXcFZt