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| 1 | // | |
| 2 | // Created by Julio Tentor <[email protected]> | |
| 3 | // | |
| 4 | ||
| 5 | import java.util.Arrays; | |
| 6 | import java.util.Random; | |
| 7 | import java.util.Scanner; | |
| 8 | ||
| 9 | public class Helper {
| |
| 10 | ||
| 11 | ||
| 12 | //region Static Objects | |
| 13 | static Random random = new Random(); | |
| 14 | static Scanner scanner = new Scanner(System.in); | |
| 15 | //endregion | |
| 16 | ||
| 17 | ||
| 18 | //region Character Helpers | |
| 19 | public static Character getCharacter(Scanner scanner, String inputMessage, String errorMessage) {
| |
| 20 | Character characterValue; | |
| 21 | while (true) {
| |
| 22 | System.out.print(inputMessage); | |
| 23 | try {
| |
| 24 | characterValue = scanner.nextLine().charAt(0); | |
| 25 | return characterValue; | |
| 26 | } catch (Exception exception) {
| |
| 27 | System.out.println(errorMessage); | |
| 28 | scanner.nextLine(); | |
| 29 | } | |
| 30 | } | |
| 31 | } | |
| 32 | public static Character getCharacter(Scanner scanner, String inputMessage) {
| |
| 33 | return getCharacter(scanner, inputMessage, "Ingrese un caracter válido"); | |
| 34 | } | |
| 35 | public static Character getCharacter(String inputMessage, String errorMessage) {
| |
| 36 | return getCharacter(Helper.scanner, inputMessage, errorMessage); | |
| 37 | } | |
| 38 | public static Character getCharacter(String inputMessage) {
| |
| 39 | return getCharacter(Helper.scanner, inputMessage, "Ingrese un caracter válido"); | |
| 40 | } | |
| 41 | //endregion | |
| 42 | ||
| 43 | ||
| 44 | //region Integer Helpers | |
| 45 | public static Integer getInteger(Scanner scanner, String inputMessage, String errorMessage) {
| |
| 46 | Integer integerValue = 0; | |
| 47 | while (true) {
| |
| 48 | try {
| |
| 49 | System.out.print(inputMessage); | |
| 50 | integerValue = Integer.parseInt(scanner.nextLine()); | |
| 51 | return integerValue; | |
| 52 | } | |
| 53 | catch (Exception exception) {
| |
| 54 | System.out.println(errorMessage); | |
| 55 | } | |
| 56 | } | |
| 57 | } | |
| 58 | public static Integer getInteger(Scanner scanner, String inputMessage) {
| |
| 59 | return getInteger(scanner, inputMessage, "Ingrese un número válido"); | |
| 60 | } | |
| 61 | public static Integer getInteger(String inputMessage, String errorMessage) {
| |
| 62 | return getInteger(Helper.scanner, inputMessage, errorMessage); | |
| 63 | } | |
| 64 | public static Integer getInteger(String inputMessage) {
| |
| 65 | return getInteger(Helper.scanner, inputMessage, "Ingrese un número válido"); | |
| 66 | } | |
| 67 | //endregion | |
| 68 | ||
| 69 | ||
| 70 | //region Double Helpers | |
| 71 | public static Double getDouble(Scanner scanner, String inputMessage, String errorMessage) {
| |
| 72 | Double doubleValue = 0.0; | |
| 73 | while (true) {
| |
| 74 | try {
| |
| 75 | System.out.print(inputMessage); | |
| 76 | doubleValue = Double.parseDouble(scanner.nextLine()); | |
| 77 | return doubleValue; | |
| 78 | } | |
| 79 | catch (Exception exception) {
| |
| 80 | System.out.println(errorMessage); | |
| 81 | } | |
| 82 | } | |
| 83 | } | |
| 84 | public static Double getDouble(Scanner scanner, String inputMessage) {
| |
| 85 | return getDouble(scanner, inputMessage, "Ingrese un número válido"); | |
| 86 | } | |
| 87 | public static Double getDouble(String inputMessage, String errorMessage) {
| |
| 88 | return getDouble(Helper.scanner, inputMessage, errorMessage); | |
| 89 | } | |
| 90 | public static Double getDouble(String inputMessage) {
| |
| 91 | return getDouble(Helper.scanner, inputMessage, "Ingrese un número válido"); | |
| 92 | } | |
| 93 | //endregion | |
| 94 | ||
| 95 | ||
| 96 | //region Float Helpers | |
| 97 | public static Float getFloat(Scanner scanner, String inputMessage, String errorMessage) {
| |
| 98 | Float floatValue = 0f; | |
| 99 | while (true) {
| |
| 100 | try {
| |
| 101 | System.out.print(inputMessage); | |
| 102 | floatValue = Float.parseFloat(scanner.nextLine()); | |
| 103 | return floatValue; | |
| 104 | } | |
| 105 | catch (Exception exception) {
| |
| 106 | System.out.println(errorMessage); | |
| 107 | } | |
| 108 | } | |
| 109 | } | |
| 110 | public static Float getFloat(Scanner scanner, String inputMessage) {
| |
| 111 | return getFloat(scanner, inputMessage, "Ingrese un número válido"); | |
| 112 | } | |
| 113 | public static Float getFloat(String inputMessage, String errorMessage) {
| |
| 114 | return getFloat(Helper.scanner, inputMessage, errorMessage); | |
| 115 | } | |
| 116 | public static Float getFloat(String inputMessage) {
| |
| 117 | return getFloat(Helper.scanner, inputMessage, "Ingrese un número válido"); | |
| 118 | } | |
| 119 | //endregion | |
| 120 | ||
| 121 | ||
| 122 | ||
| 123 | //region Array Helpers | |
| 124 | ||
| 125 | static void printOneDimensionArray(String textBefore, Object[] array, String textAfter) {
| |
| 126 | System.out.print(textBefore); | |
| 127 | System.out.print("[" + array[0]);
| |
| 128 | for (int i = 1; i < array.length; ++i) {
| |
| 129 | System.out.print("," + array[i]);
| |
| 130 | } | |
| 131 | System.out.print("]");
| |
| 132 | System.out.print(textAfter); | |
| 133 | } | |
| 134 | ||
| 135 | ||
| 136 | static void printTwoDimensionArray(String textBefore, Object[][] array, String textAfter) {
| |
| 137 | System.out.print(textBefore); | |
| 138 | ||
| 139 | System.out.print("[[" + array[0][0]);
| |
| 140 | for (int j = 1; j < array[0].length; ++j) {
| |
| 141 | System.out.print("," + array[0][j]);
| |
| 142 | } | |
| 143 | System.out.print("]");
| |
| 144 | ||
| 145 | for (int i = 1; i < array.length; ++i) {
| |
| 146 | System.out.print(",[" + array[i][0]);
| |
| 147 | for (int j = 1; j < array[i].length; ++j) {
| |
| 148 | System.out.print("," + array[i][j]);
| |
| 149 | } | |
| 150 | System.out.print("]");
| |
| 151 | } | |
| 152 | System.out.print("]");
| |
| 153 | System.out.print(textAfter); | |
| 154 | } | |
| 155 | //endregion | |
| 156 | ||
| 157 | ||
| 158 | ||
| 159 | //region Enum Helpers | |
| 160 | ||
| 161 | // from http://stackoverflow.com/questions/13783295/getting-all-names-in-an-enum-as-a-string | |
| 162 | public static String[] getEnumNames(Class<? extends Enum<?>> e) {
| |
| 163 | return Arrays.toString(e.getEnumConstants()).replaceAll("^.|.$", "").split(", ");
| |
| 164 | } | |
| 165 | ||
| 166 | //endregion | |
| 167 | ||
| 168 | } | |
| 169 |