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copied!<p>Try this:</p> <pre><code>System.out.printf( "The length of the line between the points (%d, %d) and (%d, %d) is %f%n", x1, x2, y1, y2, distance); </code></pre> <p>The simplest solution for these cases is to use a formatted string, as shown in the code above. See more details of the syntax of such as string in the <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html" rel="nofollow noreferrer">documentation</a>.</p> <p>In the above snippet, each character after a <code>%</code> indicates that the corresponding parameter in that position (after the string, in left-to-right order) must be formatted accordingly. In particular:</p> <ul> <li>%d : This is going to be an integer. The first four parameters are the <code>int</code>s <code>x1, y1, x2, y2</code></li> <li>%f : This is going to be a decimal number. The fifth parameter is the <code>double</code> called <code>distance</code></li> <li>%n : This is going to be a platform-specific new line character</li> </ul> <p>The <a href="http://docs.oracle.com/javase/7/docs/api/java/io/PrintStream.html#printf%28java.lang.String,%20java.lang.Object...%29" rel="nofollow noreferrer"><code>printf</code></a> method takes care of replacing each format character with the corresponding parameter value, creating and printing a <code>String</code> as expected. This is much easier and less error-prone than concatenating the string parts with the <code>+</code> operator, interspersing the required variables.</p>

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