Parameters 2
We can define methods to have multiple parameters in their parentheses.
public static void convertTemperature(double temp, char celsOrFahr) {
//...
}
The name of the method, along with its list of parameter datatypes, is termed the method's signature.
signature¶
A method's name and list of parameter datatypes.
Defining Multiple Parameters¶
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Method parameters are separated by commas in the method's parentheses.
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Each parameter needs a type (even if all parameters are the same type).
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Order of parameters matters.
- Users of the
convertTemperature(double temp, char celsOrFahr)method must pass adoubleandchar, in that order.
"Parameters" vs. "Arguments"¶
You may hear the word "arguments" in place of "parameters" - they are different things: * A method uses parameters defined in its parentheses. * A caller passes arguments to a method.
parameters¶
Variables a method uses.
arguments¶
Data a caller passes when calling a method.
Drill¶
Methods/src/drills/CalculateTemp.java
1. Define a method with the following signature:
name: calculateTemp
return type: double
parameter 1: floating point temperature
parameter 2: a character denoting the temperature scale, where 'C' means Celsius and 'F' means Fahrenheit
Be sure to put "public static" in front of the method return type and name
- Call the method to calculate temperature. Be sure to pass arguments in the correct order.