安卓/java 基本資料型別轉換
阿新 • • 發佈:2018-12-12
public class TypeCastHelper { private static final String DEFAULT_STRING = ""; private static final int DEFAULT_INT = 0; private static final long DEFAULT_LONG = 0L; private static final double DEFAULT_DOUBLE = 0.0D; private static final float DEFAULT_FLOAT = 0.0F; private static final boolean DEFAULT_BOOLEAN = Boolean.FALSE; public static String toString(Object obj, String defaultValue) { return obj != null ? obj.toString() : defaultValue; } public static String toString(Object obj) { return toString(obj, DEFAULT_STRING); } public static String toString(Integer intValue, String defaultValue) { return intValue != null ? String.valueOf(intValue) : defaultValue; } public static String toString(Integer intValue) { return toString(intValue, DEFAULT_STRING); } public static String toString(Long longValue, String defaultValue) { return longValue != null ? String.valueOf(longValue) : defaultValue; } public static String toString(Long longValue) { return toString(longValue, DEFAULT_STRING); } public static String toString(Boolean booleanValue, String defaultValue) { return booleanValue != null ? String.valueOf(booleanValue) : defaultValue; } public static String toString(Boolean booleanValue) { return toString(booleanValue, DEFAULT_STRING); } public static String toString(Double doubleValue, String defaultValue) { return null != doubleValue ? String.valueOf(doubleValue) : defaultValue; } public static String toString(Double doubleValue) { return toString(doubleValue, DEFAULT_STRING); } public static String toString(Float floatValue, String defaultValue) { return null != floatValue ? String.valueOf(floatValue) : defaultValue; } public static String toString(Float floatValue) { return toString(floatValue, DEFAULT_STRING); } public static int toInt(Object objectValue, int defaultValue) { int intValue = defaultValue; if (null != objectValue) { try { intValue = Integer.parseInt(toString(objectValue, toString(defaultValue))); } catch (NumberFormatException numberFormatException) { System.err.println(numberFormatException.getMessage()); } } return intValue; } public static int toInt(Object objectValue) { return toInt(objectValue, DEFAULT_INT); } public static int toInt(String stringValue, int defaultValue) { int intValue = defaultValue; if (null != stringValue && stringValue.length() > 0) { try { intValue = Integer.parseInt(stringValue); } catch (NumberFormatException numberFormatException) { System.err.println(numberFormatException.getMessage()); } } return intValue; } public static int toInt(Long longValue, int defaultValue) { int intValue = defaultValue; if (null != longValue) { intValue = longValue.intValue(); } return intValue; } public static int toInt(Long longValue) { return toInt(longValue, DEFAULT_INT); } public static int toInt(Boolean booleanValue, int defaultValue) { int intValue = defaultValue; if (null != booleanValue) { intValue = booleanValue ? 1 : 0; } return intValue; } public static int toInt(Boolean booleanValue) { return toInt(booleanValue, DEFAULT_INT); } public static int toInt(Double doubleValue, int defaultValue) { int intValue = defaultValue; if (null != doubleValue) { intValue = doubleValue.intValue(); } return intValue; } public static int toInt(Double doubleValue) { return toInt(doubleValue, DEFAULT_INT); } public static int toInt(Float floatValue, int defaultValue) { int intValue = defaultValue; if (null != floatValue) { intValue = floatValue.intValue(); } return intValue; } public static int toInt(Float floatValue) { return toInt(floatValue, DEFAULT_INT); } public static long toLong(Object objectValue, long defaultValue) { long longValue = defaultValue; if (null != objectValue) { try { longValue = Long.parseLong(toString(objectValue, toString(defaultValue))); } catch (NumberFormatException numberFormatException) { System.err.println(numberFormatException.getMessage()); } } return longValue; } public static long toLong(Object objectValue) { return toLong(objectValue, DEFAULT_LONG); } public static long toLong(String stringValue, long defaultValue) { long longValue = defaultValue; if (null != stringValue && stringValue.length() > 0) { longValue = Long.parseLong(stringValue); } return longValue; } public static long toLong(String stringValue) { return toLong(stringValue, DEFAULT_LONG); } public static long toLong(Integer intValue, long defaultValue) { long longValue = defaultValue; if (null != intValue) { longValue = intValue.longValue(); } return longValue; } public static long toLong(Integer intValue) { return toLong(intValue, DEFAULT_LONG); } public static long toLong(Boolean booleanValue, long defaultValue) { long longValue = defaultValue; if (null != booleanValue) { longValue = booleanValue ? 1L : 0L; } return longValue; } public static long toLong(Boolean booleanValue) { return toLong(booleanValue, DEFAULT_LONG); } public static long toLong(Double doubleValue, long defaultValue) { long longValue = defaultValue; if (null != doubleValue) { longValue = doubleValue.longValue(); } return longValue; } public static long toLong(Double doubleValue) { return toLong(doubleValue, DEFAULT_LONG); } public static long toLong(Float floatValue, long defaultValue) { long longValue = defaultValue; if (null != floatValue) { longValue = floatValue.longValue(); } return longValue; } public static long toLong(Float floatValue) { return toLong(floatValue, DEFAULT_LONG); } public static boolean toBoolean(Object objectValue, boolean defaultValue) { boolean booleanValue = defaultValue; if (null != objectValue) { booleanValue = Boolean.valueOf(toString(objectValue, toString(defaultValue))); } return booleanValue; } public static boolean toBoolean(Object objectValue) { return toBoolean(objectValue, DEFAULT_BOOLEAN); } public static boolean toBoolean(String stringValue, boolean defaultValue) { boolean booleanValue = defaultValue; if (null != stringValue && stringValue.length() > 0) { booleanValue = Boolean.valueOf(stringValue); } return booleanValue; } public static boolean toBoolean(String stringValue) { return toBoolean(stringValue, DEFAULT_BOOLEAN); } public static boolean toBoolean(Integer intValue, boolean defaultValue) { boolean booleanValue = defaultValue; if (null != intValue) { booleanValue = intValue == 1; } return booleanValue; } public static boolean toBoolean(Integer intValue) { return toBoolean(intValue, DEFAULT_BOOLEAN); } public static boolean toBoolean(Long longValue, boolean defaultValue) { boolean booleanValue = defaultValue; if (null != longValue) { booleanValue = longValue.longValue() == 1L; } return booleanValue; } public static boolean toBoolean(Long longValue) { return toBoolean(longValue, DEFAULT_BOOLEAN); } public static float toFloat(Object objectValue, float defaultValue) { float floatValue = defaultValue; if (null != objectValue) { try { floatValue = Float.valueOf(toString(objectValue, toString(defaultValue))); } catch (NumberFormatException numberFormatException) { System.err.println(numberFormatException); } } return floatValue; } public static float toFloat(Object objectValue) { return toFloat(objectValue, DEFAULT_FLOAT); } public static float toFloat(String stringValue, float defaultValue) { float floatValue = defaultValue; if (null != stringValue && stringValue.length() > 0) { try { floatValue = Float.valueOf(stringValue); } catch (NumberFormatException numberFormatException) { System.err.println(numberFormatException.getMessage()); } } return floatValue; } public static float toFloat(String stringValue) { return toFloat(stringValue, DEFAULT_FLOAT); } public static float toFloat(Integer intValue, float defaultValue) { float floatValue = defaultValue; if (null != intValue) { floatValue = intValue.floatValue(); } return floatValue; } public static float toFloat(Integer intValue) { return toFloat(intValue, DEFAULT_FLOAT); } public static float toFloat(Long longValue, float defaultValue) { float floatValue = defaultValue; if (null != longValue) { floatValue = longValue.floatValue(); } return floatValue; } public static float toFloat(Long longValue) { return toFloat(longValue, DEFAULT_FLOAT); } public static float toFloat(Double doubleValue, float defaultValue) { float floatValue = defaultValue; if (null != doubleValue) { floatValue = doubleValue.floatValue(); } return floatValue; } public static float toFloat(Double doubleValue) { return toFloat(doubleValue, DEFAULT_FLOAT); } public static double toDouble(Object objectValue, double defaultValue) { double doubleValue = defaultValue; if (null != objectValue) { doubleValue = Double.parseDouble(toString(objectValue, toString(defaultValue))); } return doubleValue; } public static double toDouble(Object objectValue) { return toDouble(objectValue, DEFAULT_DOUBLE); } public static double toDouble(String stringValue, double defaultValue) { double doubleValue = defaultValue; if (null != stringValue && stringValue.length() > 0) { doubleValue = Double.parseDouble(stringValue); } return doubleValue; } public static double toDouble(String stringValue) { return toDouble(stringValue, DEFAULT_DOUBLE); } public static double toDouble(Integer intValue, double defaultValue) { double doubleValue = defaultValue; if (null != intValue) { doubleValue = intValue.doubleValue(); } return doubleValue; } public static double toDouble(Integer intValue) { return toDouble(intValue, DEFAULT_DOUBLE); } public static double toDouble(Long longValue, double defaultValue) { double doubleValue = defaultValue; if (null != longValue) { doubleValue = longValue.doubleValue(); } return doubleValue; } public static double toDouble(Long longValue) { return toDouble(longValue, DEFAULT_DOUBLE); } public static double toDouble(Float floatValue, double defaultValue) { double doubleValue = defaultValue; if (null != floatValue) { doubleValue = floatValue.doubleValue(); } return doubleValue; } public static double toDouble(Float floatValue) { return toDouble(floatValue, DEFAULT_DOUBLE); } }