title: round a floating-point number to the next integer value in java
body: <p>how can i round up a floating point number to the next integer value in Java? Suppose</p>
  <blockquote>
  <p>2.1         --&gt;3</p>
  <p>3.001       --&gt;4</p>
  <p>4.5         --&gt;5</p>
  <p>7.9         --&gt;8</p>
  </blockquote>