Ch 3-5 Vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Parameters | Sending values to methods (formal/actual)
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| Actual Parameters | Appear in calling statement; values passed in. Must match formal parameters in number, order, and type.
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| Formal Parameters | Appear in the heading of the method definition; the variables asked for and type. Must match actual parameters in number, order, and type.
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| Local Variables | Get memory only when the method is called; memory is recycled when the method is over.
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| Non-void Methods | Methods that return values (1 or more); uses data type in place of "void" in method heading.
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| Math Constants | Math.PI, Math.E
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| Math Methods | Math.abs(int), Math.max(int, double), Math.min(int, double), Math.pow(double, double), Math.sqrt(double), Math.round(int).
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| Method Signature | Method name along with its number and types of parameters (name & parameter list).
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| Method Overloading | Methods having the same name but different signatures (i.e. abs, max, min of math class; substring of String class).
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| String Class | Defining String objects and using String methods (i.e. length, indexOf, substring, charAt).
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| Scanner Class | Defining a Scanner object for keyboard input and using Scanner methods (i.e. next, nextLine, nextInt, nextDouble) and using a PROMPT (print statement) prior to input. Scanner console = new Scanner(System.in);
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| Import Statements | Used to access classes in a specific Java package (import java.util.*; or input java.awt.*;).
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| Printf Statements | To output a real number with a specific number of decimal digits or spaces. (%f- real number, %d- integer, %s- string, %w- width)
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| Java Coordinate System | PIXELS are units in the grid. DrawingPanel
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| DrawingPanel class | panel.setBackground(Color.
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| Graphics Class | Graphics g = panel.getGraphics();
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| if and if/else Statements | Used for conditional execution.
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| Relational Operators | Simple conditions (i.e. ==, !=, <, >, <=, >=).
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| Evaluation Conditions (boolean expressions) | Legal conditions always evaluate to either true or false.
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| Logical Operators | Multiple conditions (i.e. &&, ||, !)
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| Order of Operations | Math operators - Relational operators - Logical operators
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