To create and compile a Java class, use a text editor and the JDK javac tool.
To create a Java class for a custom-defined function:
In a text editor, create a Java class.
For example:
public class CalcFunc { public static double sum (double[] data) { int i, n = data.length; double sum = 0.0d; for (i=0; i<n; i++) { double d = data [i]; sum = sum + d; } return sum; } }
Save the file with a .java extension.
For example:
CalcFunc.java
Navigate to the directory where the .java file resides; at a command prompt, enter this command:
javac java_filename
For example:
javac CalcFunc.java
Resolve any compiling errors until the compiler creates a new file with a .class extension.
For example:
CalcFunc.class