Thread: Need a "cls/clear" instruction

I need a clear instruction like consoles "cls" (windows) and "clear" (linux) instruction.

Runtime.getRuntime().exec("clear");

doesn't work.

Console error at program:

Exception in thread "main" java.io.IOException: Cannot run program "clear": CreateProcess error=2, El sistema no puede encontrar el archivo especificado
	at java.lang.ProcessBuilder.start(Unknown Source)
	at java.lang.Runtime.exec(Unknown Source)
	at java.lang.Runtime.exec(Unknown Source)
	at java.lang.Runtime.exec(Unknown Source)
	at comparator.main(comparator.java:15)
Caused by: java.io.IOException: CreateProcess error=2, El sistema no puede encontrar el archivo especificado
	at java.lang.ProcessImpl.create(Native Method)
	at java.lang.ProcessImpl.<init>(Unknown Source)
	at java.lang.ProcessImpl.start(Unknown Source)
	... 5 more

Class code:

import java.io.IOException;
import java.util.Scanner;
// using basic phone specifications and features I realized that an if or a scanner can work for this java application
 
public class comparator {
 
	public static void main(String[] args) throws IOException {
	String sdcard;
	Scanner entrys = new Scanner(System.in);
	// declaring variables
	System.out.println("Enter the processor you need.");
	int processors = entrys.nextInt();
	boolean processorjudgement = (processors >= 2);
	boolean processorjudgement2 = (processors <= 4);
	Runtime.getRuntime().exec("clear");
	System.out.println("Enter the RAM you need.");
	int ram = entrys.nextInt();
	Runtime.getRuntime().exec("clear");
	double androidversion = entrys.nextDouble();
	Runtime.getRuntime().exec("clear");
	// declaring entrys methods
	if (processorjudgement = true) {
		System.out.println("Processor is powerful but dual-core processors gets lag on Android system, if you want a free lag phone, consider a quad-core");
		}
	}
 
 
	}

If asking about it, just an Android phone features program, description at comments.

Anyone knows?

Doing quick research, I came across Java Curses Library | Free software downloads at SourceForge.net . This forum Clear the Screen - Java talks at length about other methods, but it depends on the platform.