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43
src/application/Main.java
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43
src/application/Main.java
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package application;
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import javafx.application.Application;
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import javafx.stage.Stage;
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import javafx.scene.Scene;
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import javafx.scene.control.Alert;
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import javafx.scene.control.Alert.AlertType;
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import javafx.scene.control.ButtonType;
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public class Main extends Application {
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public void start(Stage primaryStage) {
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try {
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RootBorderPane root = new RootBorderPane();
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Scene scene = new Scene(root, 700, 500);
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primaryStage.setScene(scene);
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primaryStage.setTitle("GUI-Uebung 4");
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primaryStage.show();
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} catch (Exception e) {
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showAlert(AlertType.ERROR, e.getMessage());
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}
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}
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public static void showAlert(AlertType alertType, String message) {
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if (message != null) {
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Alert alert = new Alert(alertType, message, ButtonType.OK);
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alert.setHeaderText(null);
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if (alertType == AlertType.WARNING)
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alert.setTitle("Warnung");
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else
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alert.setTitle("Hinweis-Meldung");
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alert.showAndWait();
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} else {
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Alert alert = new Alert(alertType, "Bitte waehlen Sie \"Weiter\" aus", ButtonType.NEXT);
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alert.setHeaderText(null);
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alert.setTitle("Hinweis-Meldung");
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alert.showAndWait();
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}
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}
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public static void main(String[] args) {
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launch(args);
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}
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}
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163
src/application/RootBorderPane.java
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163
src/application/RootBorderPane.java
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package application;
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import javafx.application.Platform;
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import javafx.geometry.HPos;
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import javafx.geometry.Insets;
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import javafx.geometry.Pos;
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import javafx.geometry.VPos;
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import javafx.scene.control.Alert.AlertType;
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import javafx.scene.control.Button;
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import javafx.scene.control.Label;
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import javafx.scene.control.Menu;
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import javafx.scene.control.MenuBar;
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import javafx.scene.control.MenuItem;
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import javafx.scene.control.RadioButton;
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import javafx.scene.control.TextArea;
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import javafx.scene.control.TextField;
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import javafx.scene.control.ToggleGroup;
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import javafx.scene.layout.BorderPane;
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import javafx.scene.layout.GridPane;
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public class RootBorderPane extends BorderPane {
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private MenuBar menuBar;
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private Menu mDatei, mBearbeiten;
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private MenuItem miBeenden, miReset;
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private GridPane gpZentrum;
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private RadioButton rbDirekt, rbLeerzeichen, rbLeerzeile;
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private ToggleGroup tgRadios;
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private TextField tfText1, tfText2;
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private TextArea taErgebnis;
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private Button btVerbinden;
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private Label lbErgebnis;
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public RootBorderPane() {
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initComponents();
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addComponents();
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addHandler();
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}
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private void initComponents() {
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String promptText = "Bitte einen Text eingeben...";
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menuBar = new MenuBar();
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mDatei = new Menu("Datei");
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mBearbeiten = new Menu("Bearbeiten");
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miBeenden = new MenuItem("Beenden");
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miReset = new MenuItem("Reset");
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gpZentrum = new GridPane();
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gpZentrum.setAlignment(Pos.CENTER);
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gpZentrum.setHgap(10);
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gpZentrum.setVgap(10);
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gpZentrum.setPadding(new Insets(10));
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tfText1 = new TextField();
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tfText1.setPromptText(promptText);
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tfText2 = new TextField();
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tfText2.setPromptText(promptText);
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taErgebnis = new TextArea();
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taErgebnis.setDisable(true);
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taErgebnis.setEditable(false);
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rbDirekt = new RadioButton("Direkt: ");
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rbLeerzeichen = new RadioButton("Leerzeichen: ");
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rbLeerzeile = new RadioButton("Leerzeile: ");
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btVerbinden = new Button("Verbinden");
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tgRadios = new ToggleGroup();
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lbErgebnis = new Label("Ergebnis");
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}
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private void addComponents() {
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mDatei.getItems().addAll(miBeenden);
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mBearbeiten.getItems().addAll(miReset);
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menuBar.getMenus().addAll(mDatei, mBearbeiten);
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gpZentrum.add(new Label("Verbinden"), 0, 0);
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gpZentrum.add(new Label("Text 1"), 0, 3);
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gpZentrum.add(new Label("Text 2"), 0, 4);
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// gpZentrum.add(new Label("Ergebnis:"), 0, 5);
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gpZentrum.add(lbErgebnis, 0, 5);
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GridPane.setValignment(lbErgebnis, VPos.TOP);
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gpZentrum.add(rbDirekt, 1, 0);
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gpZentrum.add(rbLeerzeichen, 1, 1);
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gpZentrum.add(rbLeerzeile, 1, 2);
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gpZentrum.add(tfText1, 1, 3);
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gpZentrum.add(tfText2, 1, 4);
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gpZentrum.add(taErgebnis, 1, 5);
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gpZentrum.add(btVerbinden, 1, 6);
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GridPane.setHalignment(btVerbinden, HPos.RIGHT);
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tgRadios.getToggles().addAll(rbDirekt, rbLeerzeichen, rbLeerzeile);
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tgRadios.selectToggle(rbDirekt);
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setTop(menuBar);
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setCenter(gpZentrum);
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}
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private void addHandler() {
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miBeenden.setOnAction(event -> { Platform.exit(); } );
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btVerbinden.setOnAction(event -> verbinden());
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miReset.setOnAction(event -> reset());
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}
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// -------------------------- handler -------------------------
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private void verbinden() {
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String text1 = tfText1.getText();
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String text2 = tfText2.getText();
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String verbinder = ""; // Direct
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if (rbLeerzeichen.isSelected()) {
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verbinder = " "; // spacebar
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}
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if (rbLeerzeile.isSelected()) {
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verbinder = "\n"; // NewLine
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}
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if (!text1.isEmpty() && !text2.isEmpty()) {
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String ergebnis = text1 + verbinder + text2;
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taErgebnis.setText(ergebnis);
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taErgebnis.setDisable(false);
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} else {
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if (text1.isEmpty() && text2.isEmpty()) {
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Main.showAlert(AlertType.ERROR, "Text1 fehlt\nText2 fehlt");
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} else {
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if (text1.isEmpty()) {
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Main.showAlert(AlertType.ERROR, "Text1 fehlt");
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} else {
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Main.showAlert(AlertType.ERROR, "Text2 fehlt");
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}
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}
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}
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}
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private void reset() {
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tgRadios.selectToggle(rbDirekt);
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tfText1.clear();
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tfText2.clear();
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taErgebnis.clear();
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taErgebnis.setDisable(true);
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}
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}
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12
src/model/TextException.java
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12
src/model/TextException.java
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package model;
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public class TextException extends Exception {
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private static final long serialVersionUID = 1L;
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public TextException (String message)
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{
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super(message);
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}
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}
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60
src/model/Textverbinder.java
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60
src/model/Textverbinder.java
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package model;
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public class Textverbinder {
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public static String texteVerbindenDirekt(String text1, String text2) throws TextException
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{
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if (text1 != null && text2 != null)
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return texteVerbinden(text1, text2, "");
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else
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throw new TextException("Fehler: text1 oder text2 ungueltig (text1: \"" + text1 + "\", text2: \"" + text2 + "\")");
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}
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public static String texteVerbindenLeerZeichen(String text1, String text2) throws TextException
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{
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if (text1 != null && text2 != null)
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return texteVerbinden(text1, text2, " ");
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else
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throw new TextException("Fehler: text1 oder text2 ungueltig (text1: \"" + text1 + "\", text2: \"" + text2 + "\")");
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}
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public static String texteVerbindenLeerZeile(String text1, String text2) throws TextException
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{
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if (text1 != null && text2 != null)
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return texteVerbinden(text1, text2, "\n");
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else
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throw new TextException("Fehler: text1 oder text2 ungueltig (text1: \"" + text1 + "\", text2: \"" + text2 + "\")");
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}
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private static String texteVerbinden(String text1, String text2, String verbinder) throws TextException
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{
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if (text1 != null && text2 != null && verbinder != null)
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if (checkTextEmpty(text1) && checkTextEmpty(text2))
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if (checkVerbinder(verbinder))
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{
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StringBuilder sb = new StringBuilder().append(text1).append(verbinder).append(text2);
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return sb.toString();
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}
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else
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throw new TextException("Fehler: verbinder ist ungueltig (verbinder: \"" + verbinder + "\")");
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else
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throw new TextException("Fehler: text1 oder text2 ungueltig (text1: \"" + text1 + "\", text2: \"" + text2 + "\")");
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else
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throw new TextException("Fehler: null-Referenz fuer text1, text2 oder verbinder erhalten (text1: \"" + text1 + " \", text2: \"" + text2 + "\", " + ", verbinder: \"" + verbinder);
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}
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private static boolean checkTextEmpty(String text)
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{
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if (text != null && !text.isEmpty())
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return true;
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else
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return false;
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}
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private static boolean checkVerbinder(String text)
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{
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if (text != null && (text.equals("") || text.equals(" ") || text.equals("\n") ))
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return true;
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return false;
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}
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}
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40
src/test/TestTextverbinder.java
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40
src/test/TestTextverbinder.java
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package test;
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import model.TextException;
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import model.Textverbinder;
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public class TestTextverbinder {
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public static void main(String[] args)
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{
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try
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{
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// System.out.println(Textverbinder.texteVerbindenDirekt(null, null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenDirekt("", null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenDirekt(" ", null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenDirekt(" ", "")); // Fehler
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// System.out.println("\"" + Textverbinder.texteVerbindenDirekt(" ", " ") + "\""); // " " (Anm.: 2x Leerzeichen)
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System.out.println("\"" + Textverbinder.texteVerbindenDirekt("Java", "FX") + "\""); // "JavaFX"
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// System.out.println(Textverbinder.texteVerbindenLeerZeichen(null, null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenLeerZeichen("", null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenLeerZeichen(" ", null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenLeerZeichen(" ", "")); // Fehler
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// System.out.println("\"" + Textverbinder.texteVerbindenLeerZeichen(" ", " ") + "\""); // " " (Anm.: 3x Leerzeichen)
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System.out.println("\"" + Textverbinder.texteVerbindenLeerZeichen("kein", "Problem ") + "\""); // "kein Problem"
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// System.out.println(Textverbinder.texteVerbindenLeerZeile(null, null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenLeerZeile("", null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenLeerZeile(" ", null)); // Fehler
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// System.out.println(Textverbinder.texteVerbindenLeerZeile(" ", "")); // Fehler
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// System.out.println("\"" + Textverbinder.texteVerbindenLeerZeile(" ", " ") + "\""); // " " (Anm.: 1x Leerzeichen, 1x Leerzeile, 1x Leerzeichen)
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System.out.println("\"" + Textverbinder.texteVerbindenLeerZeile("heute", "morgen") + "\""); // "heute", dann Leerzeile, dann "morgen")
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}
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catch (TextException e)
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{
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System.out.println(e.getMessage());
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}
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}
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}
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