
spring.turbo.util.CharUtils Maven / Gradle / Ivy
package spring.turbo.util;
import org.springframework.lang.Nullable;
/**
* 字符相关工具
*
* @author 应卓
* @since 1.0.0
*/
public final class CharUtils {
/**
* 私有构造方法
*/
private CharUtils() {
}
// -----------------------------------------------------------------------------------------------------------------
/**
* 判断字符是否为 {@code null}
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isNull(@Nullable Character ch) {
return ch == null;
}
/**
* 判断字符是否不为 {@code null}
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isNotNull(@Nullable Character ch) {
return ch != null;
}
/**
* 判断字符是否为白字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isWhitespace(@Nullable Character ch) {
return ch != null && Character.isWhitespace(ch);
}
/**
* 判断字符是否不为白字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isNotWhitespace(@Nullable Character ch) {
return !isWhitespace(ch);
}
/**
* 判断字符是否为Ascii字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAscii(@Nullable Character ch) {
if (ch == null)
return false;
return ch < 128;
}
/**
* 判断字符是否为Ascii可打印字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAsciiPrintable(@Nullable Character ch) {
if (ch == null)
return false;
return ch >= 32 && ch < 127;
}
/**
* 判断字符是否为Ascii控制字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAsciiControl(@Nullable Character ch) {
if (ch == null)
return false;
return ch < 32 || ch == 127;
}
/**
* 判断字符是否为字母表中的字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAsciiAlpha(@Nullable Character ch) {
if (ch == null)
return false;
return isAsciiAlphaUpper(ch) || isAsciiAlphaLower(ch);
}
/**
* 判断字符是否为字母表中的字符并且为大写字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAsciiAlphaUpper(@Nullable Character ch) {
if (ch == null)
return false;
return ch >= 'A' && ch <= 'Z';
}
/**
* 判断字符是否为字母表中的字符并且为小写字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAsciiAlphaLower(@Nullable Character ch) {
if (ch == null)
return false;
return ch >= 'a' && ch <= 'z';
}
/**
* 判断字符是否为数字字符
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAsciiNumeric(@Nullable Character ch) {
if (ch == null)
return false;
return ch >= '0' && ch <= '9';
}
/**
* 判断字符是否为数字字符或字母
*
* @param ch 字符
* @return 判断结果
*/
public static boolean isAsciiAlphanumeric(@Nullable Character ch) {
if (ch == null)
return false;
return isAsciiAlpha(ch) || isAsciiNumeric(ch);
}
}
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