if statements are used to make decisions in java
if statements tell whether a statement is true or false and inputs a set of codes
based on its decision
if statements can only be true or false
&& is for if the statement meets more then one condition
Loops are statements
Loops repeat until a condition is met to break from it
a while loop executes the code until the condition no longer exists
example of a loop statement- while (userAnswer == ‘Y’) {
execute code…
}
a do while loop will always execute at least once because the condition is
at the end of the loop
example: do { System.out.println(“Would you like to play again?”); userAnswer = in.nextline(); }
while (userAnswer == ‘Y’
for loops execute a set number of times, it is most commonly used for processing arrays
arrays in java contains elements of similar java types
codes are optimized in arrays
a method is a set of code that is given a name for easy re-use
an array can store multiple values
array index values are able to access array elements
tne first element of array has index value O
the last element has index value (array size-1)
the array variable holds a reference
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