Unit 1 Vocabulary

Variable

• The first time you set the value of a variable.
• A name associated with a memory location in the computer.
• Where execution starts in a Java program.
• An expression that is either true or false.

boolean

• Software that translates the Java source code into the Java class file that can be run.
• used to declare a variable that can only have the value true or false.
• Operators like x++ or x+= 1 which mean x = x + 1
• The operator (++) that increases the value of a numerical variable by one.

double

• means that the field or method exists in the object that defines the class.
• used to declare a variable that is a decimal number like 3.25.
• determines the size of memory reserved for a variable, for example int, double, boolean, String.
• A name associated with a memory location in the computer.

int

• Changing the type of a variable using (type) name.
• The % operator which returns the remainder from one number divide by another.
• Common mathematical symbols such as + for addition and * for multiplication.
• used to declare a variable of type integer (a whole number like -3 or 235).

static

• Text enclosed by double quotes.
• An expression that is either true or false.
• means that the field or method exists in the object that defines the class.
• determines the size of memory reserved for a variable, for example int, double, boolean, String.

compiler

• A name associated with a memory location in the computer.
• Java method that lets us print out a line of output followed by a newline to the user
• If you divide by zero, you will get this error.
• Software that translates the Java source code into the Java class file that can be run.

compiler or syntax error

• A name associated with a memory location in the computer.
• The first time you set the value of a variable.
• An error or bug that is found by the compiler like a missing semicolon
• determines the size of memory reserved for a variable, for example int, double, boolean, String.

Main Method

• used to declare a variable that is a decimal number like 3.25.
• Where execution starts in a Java program.
• A name associated with a memory location in the computer.
• Some operators are done before others, for example *, /, % have precedence over + and -, unless parentheses are used.

Boolean

• An error or bug that is found by the compiler like a missing semicolon
• An expression that is either true or false.
• Text enclosed by double quotes.
• Changing the type of a variable using (type) name.

Camel Case

• A name associated with a memory location in the computer.
• The operator (++) that increases the value of a numerical variable by one.
• The first time you set the value of a variable.
• One way to create a variable name by appending several words together and uppercasing the first letter of each word after the first word (myScore).