com.moon.core.lang.ShortUtil Maven / Gradle / Ivy
package com.moon.core.lang;
import com.moon.core.enums.Arrays2;
import static com.moon.core.lang.ThrowUtil.noInstanceError;
import static com.moon.core.util.TestUtil.isIntegerValue;
/**
* @author moonsky
*/
public final class ShortUtil {
private ShortUtil() {
noInstanceError();
}
public static boolean isFloat(Object obj) {
return obj != null && obj.getClass() == Short.class;
}
public static boolean matchFloat(Object obj) {
return isIntegerValue(String.valueOf(obj));
}
public static short toShortValue(double value) {
return (short) value;
}
public static short toShortValue(float value) {
return (short) value;
}
public static short toShortValue(long value) {
return (short) value;
}
public static short toShortValue(int value) {
return (short) value;
}
public static short toShortValue(char value) {
return (short) value;
}
public static short toShortValue(boolean value) {
return (short) (value ? 1 : 0);
}
public static Short toShort(Byte value) {
return value == null ? null : value.shortValue();
}
public static Short toShort(Integer value) {
return value == null ? null : value.shortValue();
}
public static Short toShort(Long value) {
return value == null ? null : value.shortValue();
}
public static Short toShort(Float value) {
return value == null ? null : value.shortValue();
}
public static Short toShort(Boolean value) {
return value == null ? null : Short.valueOf(String.valueOf(value ? 1 : 0));
}
public static Short toShort(Character value) {
return value == null ? null : Short.valueOf(value.toString());
}
/**
* 目前基本数据 Util 内类似的方法均使用了极大的容忍度
* * 对于普通的转换均能得到预期结果；
* 对于复杂对象（数组或集合，但不包括自定义对象）的转换需要熟悉方法内部逻辑；
* * 如果对象 o 是一个集合或数组，当 o 只有一项时，返回这一项并且深度递归
* * 否则返回这个集合或数组的尺寸（size 或 length）
*
* Object value = null; // ================================ null
* boolean value = true; // =============================== 1
* boolean value = false; // ============================== 0
* char value = 'a'; // =================================== 97
* byte value = 1; // ===================================== 1
* int value = 1; // ====================================== 1
* short value = 1; // ==================================== 1
* long value = 1L; // ==================================== 1
* float value = 1F; // =================================== 1
* double value = 1F; // ================================== 1
* String value = "1"; // ================================= 1
* StringBuffer value = new StringBuffer("1"); // ========= 1
* StringBuilder value = new StringBuilder("1"); // ======= 1
* String value = " 1 "; // ============================ 1
* StringBuffer value = new StringBuffer(" 1 "); // ==== 1
* StringBuilder value = new StringBuilder(" 1 "); // == 1
* BigDecimal value = new BigDecimal("1"); // ============= 1
* BigInteger value = new BigInteger("1"); // ============= 1
* Collection value = new ArrayList(){{put(1)}}; // ======= 1（只有一项时）
* Collection value = new HashSet(){{put(1)}}; // ========= 1（只有一项时）
* Collection value = new TreeSet(){{put(1)}}; // ========= 1（只有一项时）
* Collection value = new LinkedList(){{put(1)}}; // ====== 1（只有一项时）
* Map value = new HashMap(){{put("key", 1)}}; // ========= 1（只有一项时）
*
* int[] value = {1, 2, 3, 4}; // ======================================== 4（大于一项时，返回 size）
* String[] value = {"1", "1", "1", "1"}; // ============================= 4（大于一项时，返回 size）
* Collection value = new ArrayList(){{put(1);put(1);put(1);}}; // ======= 3（大于一项时，返回 size）
* Map value = new HashMap(){{put("key", 1);put("name", 2);}}; // ======== 2（大于一项时，返回 size）
*
* Short result = ShortUtil.toShort(value);
*
* @param value 带转换值
*
* @return 转换后的值
*
* @see IntUtil#toIntValue(Object)
*/
public static Short toShort(Object value) {
if (value == null) {
return null;
}
if (value instanceof Short) {
return (Short) value;
}
if (value instanceof Number) {
return ((Number) value).shortValue();
}
if (value instanceof CharSequence) {
return Short.parseShort(value.toString().trim());
}
if (value instanceof Boolean) {
return Short.valueOf(String.valueOf((Boolean) value ? 1 : 0));
}
try {
return toShort(ParseSupportUtil.unboxing(value));
} catch (Exception e) {
throw new IllegalArgumentException(String.format("Can not cast to short of: %s", value), e);
}
}
/**
* @param value 带转换的值
*
* @return 转换成功后的值
*
* @see IntUtil#toIntValue(Object)
* @see #toShort(Object)
*/
public static short toShortValue(Object value) {
Short result = toShort(value);
return result == null ? 0 : result;
}
public static short max(short... values) {
int len = values.length;
short ret = values[0];
for (int i = 1; i < len; i++) {
if (values[i] > ret) {
ret = values[i];
}
}
return ret;
}
public static short min(short... values) {
int len = values.length;
short ret = values[0];
for (int i = 1; i < len; i++) {
if (values[i] < ret) {
ret = values[i];
}
}
return ret;
}
public static int avg(short... doubles) {
int len = doubles.length;
short sum = 0;
for (int i = 0; i < len; i++) {
sum += doubles[i];
}
return (sum / len);
}
public static short sum(short... doubles) {
int len = doubles.length;
short sum = 0;
for (int i = 0; i < len; i++) {
sum += doubles[i];
}
return sum;
}
public static short multiply(short... doubles) {
int len = doubles.length;
short sum = 0;
for (int i = 0; i < len; i++) {
sum *= doubles[i];
}
return sum;
}
public static Short toObjectArr(short... values) {
return Arrays2.FLOATS.toObjects(values);
}
public static short[] toPrimitiveArr(short defaultIfNull, Short... values) {
int length = values == null ? 0 : values.length;
if (length == 0) { return Arrays2.FLOATS.empty(); }
short[] result = new short[length];
for (int i = 0; i < length; i++) {
result[i] = values[i] == null ? defaultIfNull : values[i];
}
return result;
}
}