Posts tagged while

Looping in Java, a brief look at the various loops and how they can be applied

0
853 days
by in Certification, Core Java, Java, Programming Languages, SCJP

One of the great features of any programming language is the ability to repeat blocks of code, sometimes indefinately, sometimes until a certain condition is met, or for a set number of iterations.

Luckily, Java comes with several flavours of loops, let have a brief look at our options

  • The “for” loop – The for loop is generally used when you know in advance how many iterations the loop must execute. The for loop enables you to setup a repeatable code block with access to the index(es)
Click to read the full post
Share

Using while loops, for when you don’t know how long the piece of string is…

1
853 days
by in Certification, Core Java, Java, SCJP

Just another bitesize SCJP post here, looking at the while loop in Java.

There may be times, where you need to continually iterate over a code block for an unknown number of times. What you can do, is to loop through a code block while a condition is true, something else might change that condition, and when this happens, you can exit out of the loop.

In a psuedo-code way, this is how the while loop operates : 

while (boolean_expression)
{
  //do stuff here
}

The boolean_expression, as the name suggests must equal a boolean value. All of the following examples are valid

Click to read the full post
Share
Go to Top