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The Department of Computer Science & Engineering
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STUART C. SHAPIRO: CSE
115 C
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while (condition) statementcondition is true, execute the
statement, and repeat.condition is false, don't execute the
statement, but continue with the statement
following the while statement.
do statement while (condition);statement.
If the condition is true, repeat.condition is false, don't execute the
statement again, but continue with the statement
following the do statement.
See Example code.
New variables may be declared in any block.
Their scope is limited to the block in which they are declared.
It is illegal in Java to declare another variable with the same name
in a nested block.
NGP.Utilities.randomNumber(i,j)
returns a "random" int, x, i <= x <=
j.
Note, a computer program can only generate a pseudorandom number.
public void paintImmediately(int x, int y, int w, int h)
"Paint the specified region in this component and all of its
descendants that overlap the region, immediately." [From the javadocs.]
Used to make sure that the animation is seen.
Path planning: To make sure that object o1 does not overlap object o2, consider where the reference point for o1 (its Location) may not be.
for (initialization; condition; update) statementinitialization statement. Then,
if the condition is true, execute the
statement followed by the
update statement. Then repeat.condition is false, don't execute the
statement, but continue with the statement
following the if statement.
The scope of variables declared in the
initialization statement is the entire
for statement.
A paradigm for loop:
bsh % for (int i = 0; i<5; i++) print(i); 0 1 2 3 4
