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shell access shell access Once again no experienced Java programmer would write code like this. One of the things that makes this solution so unwieldy is that I've used a different print statement for every single variable. However Java makes it very easy to print multiple items at once. Instead of including just one thing in the print method's arguments we put multiple items in there separated by + signs. These items can include variables like args[0] and constant strings like " and all the rest!".

shell access For example the last else block could have been written aselse { System.out.print(args[0] + " " + args[1] + " " + args[2] + " " + args[3] + " and all the rest!"); }This syntax is simpler to read and write but would still be unwieldy once the number of command line arguments grew past ten or so. In the next section we'll see how to handle over two billion command line arguments in a much simpler fashion.Exercises Rework the entire program to use no more than one print method in each block.

shell access A truly elegant solution to this problem relies on statements that haven't been introduced yet, notably for. However there is a more elegant and space efficient solution that accomplishes everything we did above, does not use the + operator, and uses only if's and a single else. No else if's are needed. Can you find it? Variables and Arithmetic ExpressionsWe'll begin this section by finding a more elegant way to handle multiple command line arguments of an undetermined number. Toward this end we introduce the concept of a loop.

shell access A loop is a section of code that is executed repeatedly until a stopping condition is met. A typical loop may look like:while there's more data { Read a Line of Data Do Something with the Data }This isn't working code but it does give you an idea of a very typical loop. We have a test condition (Is there more data?) and something we want to do with if the condition is met. (Read a Line of Data and Do Something with the Data.) There are many different kinds of loops in Java including while, for, and do while loops.

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