Scroll Display Example

Display.java

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

class Renderer {
    private void line() {
        System.out.println("***********************");
    }

    private void title() {
        System.out.println("     Some App    ");
    }

    private void asciiClear() {
        System.out.print("\033[H\033[2J");
    }

    private void clear() {
        //only one may be required
        asciiClear();
        clearUsingSysCall();
    }

    private void clearUsingSysCall() {
        try {
            String os = System.getProperty("os.name").toLowerCase();
            ProcessBuilder processRunner = new ProcessBuilder();
            if (os.indexOf("win") != -1) {
                processRunner.command("cmd", "/c", "cls");
            } else {
                processRunner.command("sh", "-c", "clear");
            }
            processRunner.inheritIO().start().waitFor();
        } catch (Exception ex) {
        }

    }

    private List<Integer> items = IntStream.range(1, 1000).boxed().collect(Collectors.toList());
    private int marker = 0;

    private List<String> movingMessages() {
        List<String> batch = items.stream().dropWhile(i -> i <= marker).map(i -> String.format("Some value %d", i)).limit(3).collect(Collectors.toList());
        marker = marker + 1;
        return batch;
    }

    private void display(List<String> thisLot) {
        clear();
        StringBuilder builder = new StringBuilder("\r");
        thisLot.stream().forEach(item -> builder.append(item).append("\n"));
        line();
        title();
        line();
        System.out.print(builder.toString());
        line();
    }

    void execute() {
        while (true) {
            List<String> thisLot = movingMessages();
            display(thisLot);
            line();
            System.out.print("Your Input [q to quit]: ");
            String cmd = System.console().readLine();
            if ("q".equals(cmd)) {
                break;
            }
        }
    }
}

public class Display {
    public static void main(String[] args) {
        new Renderer().execute();
    }
}

/**
javac Display.java && java Display
**/