java判斷對象類型_java中判斷Object對象類型

Object param = params.get(i); if (param instanceof Integer) { int value = ((Integer) param).intValue(); prepStatement.setInt(i + 1, value); } else if (param instanceof String) { String s = (String) param; prepStatement.setString(i + 1, s); } else if (param instanceof Double) { double d = ((Double) param).doubleValue(); prepStatement.setDouble(i + 1, d); } else if (param instanceof Float) { float f = ((Float) param).floatValue(); prepStatement.setFloat(i + 1, f); } else if (param instanceof Long) { long l = ((Long) param).longValue(); prepStatement.setLong(i + 1, l); } else if (param instanceof Boolean) { boolean b = ((Boolean) param).booleanValue(); prepStatement.setBoolean(i + 1, b); } else if (param instanceof Date) { Date d = (Date) param; prepStatement.setDate(i + 1, (Date) param); }