Java Lessons 5 – 8 Mr. Kalmes.

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Presentation transcript:

Java Lessons 5 – 8 Mr. Kalmes

Learning Targets I will be able to utilize variables I will be able to develop interactive programs I will be able to create input variables I will be able to explain the concept of the computer human interface

Lesson 5 Variable names can be more than one letter long. Variables can hold more than just numbers; they can hold words. You have to choose what type of values the variable will hold when the variable is first created. The value of a variable (but not its type) can change throughout the program.

Lesson 5 Types of variables: Integers Doubles Strings can hold a value between ± 2 billion Doubles can hold a number that may have a fractional part. Holds value between ± 1.79769 × 10308 and 4.94065 × 10-324 Strings can hold words or phrases

Lesson 5

Lesson 6 Mathematical Symbols: Plus Sign (+) will add different variables together Minus Sign (-) will subtract integers or doubles Asterisk (*) will multiply integers or doubles Slash (/) will divide integers or doubles Percent (%) The remainder after division

Lesson 6

Lesson 7

Lesson 7

Lesson 8

Exit Slip List 2 of the 4 rules of variables What are the 3 type of variables