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package deel1;
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import java.util.*;
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    static String getInput () {
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    Scanner scan = new Scanner(System.in);
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    String zin = "";
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    public static void main(String[] args) {
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    String zin = getInput();
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    boolean foundh = false;
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    String zinUitvoer = filterZin(zin);
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    System.out.println("Voer een zin in: ");
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    if (scan.hasNextLine())
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        zin = scan.nextLine().trim();
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    static String getInput() {
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        Scanner scan = new Scanner(System.in);
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        String zin = "";
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        System.out.println("Geen invoer!");
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        System.exit(0);
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        System.out.println("Voer een zin in: ");
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        if (scan.hasNextLine()) {
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            zin = scan.nextLine().trim();
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        }
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            static String filterZin(String zin) {
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            }
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            System.out.println("Geen invoer!");
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            System.exit(0);
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        }
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        return zin;
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    }
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    static String filterZin(String zin) {
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        for (int groteLetters = 65; groteLetters <= 90; groteLetters++) {
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            groteLetters = groteLetters + 32;
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            char kleineLetterAlfabet = (char) groteLetters;
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        }
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        int specialeTekens1 = 33;
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        int specialeTekens2 = 58;
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        int specialeTekens3 = 91;
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        if (specialeTekens1 <= 47 && specialeTekens2 <= 64 && specialeTekens3 <= 96) {
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            System.out.println("");
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        }
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        System.out.println("Gefilterd: " + zin);
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        return zin;
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    }
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}