clearing the previous content in the console

That would be completely console-dependent. Some consoles will be cleared with a formfeed (char 12). Others maybe with a DOS EOF (char 26). Other consoles may not be clearable at all. Others may take out-of-band signals like method calls to their container, or any number of other ways. Perhaps if you know what terminal type the output is going to you could send the appropriate clear-screen codes. But there's no way that I know of to be sure where the System.out is sending its data.

Unless your code has special knowledge about the console your System.out (and System.err) will be printing to, your only tool is the PrintStream interface, and all it does is take print data.