Deadlock is an unrecoverable state sometimes encountered in thread programming. It occurs under the following circumstances: thread A has a lock on object X, and is waiting for the lock to object Y; meanwhile, thread B has the lock on object Y, and is waiting for the lock on object X. In the event of a deadlock, program execution will simply suspend indefinitely, making it difficult to debug.
declaration
A statement that creates an identifier and associates attributes with it. Declaring a data item may or may not reserve memory space. A method declaration may or may not also provide the implementation.
default
A Java keyword used within a switch block to indicate the code block to execute if no case value matches the switch value.
do
A Java keyword used to declare a style of loop.
DOM
Document Object Model. An XML specification for representing data as an object tree.
Double
An object wrapper for the primitive double .
double
A Java keyword used to declare a 64-bit primitive of type double . Floating point numbers have ranges dependent upon the size of the mantissa and exponent fields. Double.MAX_VALUE and Double.MIN_VALUE indicate these for the IEEE double-precision data type. These represent the largest and smallest possible positive values.
double precision
A double precision variable is an IEEE, standard, floating point variable that is capable of representing numbers in the range 4.9 x 10-324 to 1.8 x 10308.
