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public static void main(String[] args) 
    {
        int [] arr = new int [999999];
        int i=0;
        int eingabe=0;
        do
        {
            System.out.println("Zahl eingeben: ");
            Scanner read= new Scanner (System.in);
            eingabe = read.nextInt();
            arr[i]=eingabe;
            ++i; 
        }
        while (eingabe>=0 && eingabe <=99999);
    
    }

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import java.util.Arrays;

public class Main {
	public static void main(String[] args) {
		int[] a = { 312, 3543545, 3456, -46, 456, 44354354, -453 };
		int[] b = new int[a.length];
		int b_index = 0;
		for (int a_index = 0; a_index < a.length; a_index++) {
			if (a[a_index] >= 0 && a[a_index] <= 99999) {
				b[b_index] = a[a_index];
				b_index++;
			}
		}
		a = Arrays.copyOf(b, b_index);
		System.out.println(Arrays.toString(a));
	}
}

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public static String[] readWords(String prompt) {
        String input = readLine(prompt).trim().replace('\t', ' ');
        int numberOfWords;
        int wordNumber;
        String  word;
        boolean ws;
        char ch;
        numberOfWords = 0;
        ws = true;
        for (int i=0; i<input.length(); i++) {
                ch = input.charAt(i);
                if (ws && ch != ' ') {
                        numberOfWords++;
                        ws = false;
                } else if (!ws && ch == ' ') {
                        ws = true;
                }
        }
        String[] words = new String[numberOfWords];
        wordNumber = 0;
        word = "";
        ws = true;
        for (int i=0; i<input.length(); i++) {
                ch = input.charAt(i);
                if (ws && ch != ' ') {
                        word += ch;
                        ws = false;
                } else if (!ws && ch != ' ') {
                        word += ch;
                } else if (!ws && ch == ' ') {
                        words[wordNumber++] = word;
                        word = "";
                        ws = true;
                }
        }
        if (!ws) {
                words[wordNumber] = word;
        }
        return(words);
}