CMP128 Java Ch. 05 Methods

A ___________ is a pre-defined set of steps that complete a specific task, optionally based on parameter values, and optionally returning some result.

• array

• function

• method

• module

• class

Java method (function/module) definitions can contain which of the following parts in their headers?

• An access modifier such as public or private

• An optional access specifier called static

• a return type or void

• all of the above

Java method definitions require which of the following parts in their headers?

• A method name

• a set of parentheses

• a comma-separated parameter list

• all of the above

The body of a method definition is contained within a set of ______________.

• parentheses

• rectangle brackets

• curly braces

• angle brackets

A method must be called from an object unless the method definition contains the keyword ___________ in its header.

• public
• void
• static
• int

Methods are called (instantiated/invoked) by referencing the __________ of the method and any optional _____________ list.

• data type, parameter

• method name, argument

• public keyword, parameter

• static keyword, argument

Methods that contain the _______ keyword in the data type position do not return any data, so they can simply be called without being part of a larger statement.

• void

• static

• public

• boolean

Methods that contain ____________ MUST be called as part of a larger statement that is usually an assignment or output.

• void keyword
• static keyword
• return data
• none of the above

Is the following a valid method definition?
public static void welcomeBanner(char symbol)
{
     for (int i=0; i<60; i++)
          System.out.print(symbol);
     System.out.println(" ");
     
     System.out.println(symbol + "                  This is a Welcome Banner                    " + symbol);
     for (int i=0; i<60; i++)
          System.out.print(symbol);
     System.out.println(" ");
}

• Yes
• No

Which of the following would be the correct way to call a welcomeBanner method that contains a parameter for the symbol of the border and does not return data?

• answer = welcomeBanner('$');

• System.out.println("Calling a method" + welcomeBanner('%') );

• welcomeBanner('*');

• None of the above