Java Programming Learning It Inside/Out We will learn by working within existing designs, coding transformations from inputs to results using Java. Karel The Robot We start by instructing Karel, a robot that can carry out our commands. By watching him follow our instructions, the meanings of our programs can be visualized. Variables, Assignment, and Sequential Flow A variable takes on just one value at a time, its value may be set by an assignment statement. After a variable's value is set, the variable's value may be used in a computation. If/Else Selection Sometimes what you need to do depends on the current circumstances. In that case we need to use the if/else statement to select an alternative. Using Expressions to Specify Computation Expressions are as close to automatic as Java gets! Counted repetition of actions The for statement Multiple values per variable name The array Choosing among more than two selections Extending if with the "else if" cascade, and the switch statement Working with letters and words The char and String types Conditional repetition of actions The while statement Final Projects Index of Exercises and Projects