Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind Java double Keyword?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ myNum = 19.99d;3Order
Put the learning moves in the order that makes the concept easiest to apply.
The double keyword is a data type that can store fractional numbers from 1.
Definition and Usage
Java double Keyword
❮ Java Keywords
Example
double myNum = 19.99d;
System.out.println(myNum);Definition and Usage
The double keyword is a data type that can store fractional numbers from 1.7e−308 to 1.7e+308.
Note that you should end the value with a "d":
Related Pages
Read more about data types in our Java Data Types Tutorial .
❮ Java Keywords