2. SUM functions. Probably the most frequently used function in Excel (or any other spreadsheet program), =SUM does just that: It sums a column, row, or range of numbers—but it doesn’t just sum.

Function<Integer, String> functionClass = new FunctionClass(); System.out.println(functionClass.apply(2)); When you run the above code, the output would be four. Java Function interface example.

Java’s main function is void, which means it does not return any value when it completes. main – When the JVM starts a standalone application, the main method is the function that gets invoked. String ...

Learn about 10 Text functions in Excel with examples, including Find, Len, Left, Right, Mid, Substitute, Upper, Trim, Concatenate, and Text.

In this example, we displayed two Average functions in the first row. When you want to evaluate the same group, but display a different function, add a new row.