Java Reference
In-Depth Information
floating point
A number with a decimal point and fractional part, like 1.25.
function
A list of Java instructions, declared with a return type, a name, parameters
it takes, and a block of code between { and } .
global variable
A variable that can be used by multiple functions and/or multiple classes.
hash
A list of objects indexed by any kind of object (but usually by a string).
HashMap
Java class that implements a hash.
import
A Java keyword that lets you use a class from another package, such as
java.util.HashMap (which is the HashMap class in the java.utilpackage ).
inherit
To use something from a parent.
integer
A whole number with no decimal point and no fractions, like 7.
I/O
Input/output: sending and receiving data from somewhere else, such as
a file or over the network.
iterator
An object that lets you retrieve one value at a time from some kind of
collection (like an ArrayList or HashMap ).
jar
A Java Archive file that contains .class and configuration files.
keyword
A word defined by Java as part of the language. You can't change keywords
or use their names as variables.
listener
A function that will be called when something interesting happens.
literal
A value you type in directly, like 123 , true , or "Notch" .
 
 
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