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- import java.util.Scanner;
- import java.io.*;
- public class Uhrzeitrechner {
- public static void main(String[] args) {
- System.out.println();
- System.out.println("Uhrzeitrechner");
- System.out.println();
- System.out.println("1: Zeitspanne berechnen");
- System.out.println("2: Uhrzeit erhöhen");
- System.out.println();
- System.out.println();
- Scanner scanner = new Scanner(System.in);
- int Eingabe;
- Eingabe = scanner.nextInt();
- String uhrzeit;
- String uhrzeit2;
- int[] zt1 = new int[2];
- int[] zt2 = new int[2];
- switch (Eingabe) {
- case 1: System.out.println("Zeitpunkt 1 eingeben");
- scanner.nextLine();
- uhrzeit = scanner.nextLine();
- String[] zp1 = uhrzeit.split(":");
- System.out.println();
- System.out.println("Zeitpunkt 2 eingeben");
- scanner.nextLine();
- uhrzeit2 = scanner.nextLine();
- String[] zp2 = uhrzeit2.split(":");
- System.out.println();
- zt1[0] = Integer.parseInt(zp1[0]);
- zt1[1] = Integer.parseInt(zp1[1]);
- zt2[0] = Integer.parseInt(zp2[0]);
- zt2[1] = Integer.parseInt(zp2[1]);
- if (zt1[0] < 0 || zt1[0] > 24 || zt1[1] < 0 || zt1[1] > 59 || zt2[0] < 0 || zt2[0] > 24 || zt2[1] < 0 || zt2[1] > 59) {
- System.out.println("Falsche Eingabe");
- };
- int teil1 = zt1[0] - zt2[0];
- int teil2 = zt1[1] - zt2[1];
- int t1 = 0;
- int t2 = 0;
- if (teil1 < 0) {teil1 = teil1 * (-1);};
- if (teil2 < 0) {teil2 = teil2 * (-1);};
- if (teil1 < 10) {t1 = 1;};
- if (teil2 < 10) {t2 = 1;};
- if (t1 == 0 && t2 == 0) {System.out.println("Zeitspanne beträgt: " + teil1 + "h " + teil2 + "min"); break;};
- scanner.close();
- break;
- }}}
- ------------------------------------------------------------------------------------------------------------------------------------------
- Exception in thread "main" java.lang.NumberFormatException: For input string: ""
- at java.lang.NumberFormatException.forInputString(Unknown Source)
- at java.lang.Integer.parseInt(Unknown Source)
- at java.lang.Integer.parseInt(Unknown Source)
- at Uhrzeitrechner.main(Uhrzeitrechner.java:43)
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