78 lines
2.0 KiB
Plaintext
78 lines
2.0 KiB
Plaintext
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package com.nationalelectric.greenH5.identityAuth.util.devon;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import java.util.StringTokenizer;
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/**
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*
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* @author <a href="mailto:93785732@qq.com">ZhengDaHong@fzfx</a>
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* @since 2017/4/14 11:40
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*/
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public abstract class StringUtils {
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public static final char UPPER_CASE_A = 'A';
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public static final char UPPER_CASE_Z = 'Z';
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public static final char UPPER_CASE_TO_LOWER_CASE_OFFSET = (char)32;
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public static String capitalize(String string) {
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return changeFirstCharacterCase(string, true);
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}
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public static String uncapitalize(String string) {
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return changeFirstCharacterCase(string, false);
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}
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private static String changeFirstCharacterCase(String string, boolean capitalize) {
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if (string == null || string.length() == 0) {
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return string;
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}
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StringBuilder sb = new StringBuilder(string.length());
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if (capitalize) {
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sb.append(Character.toUpperCase(string.charAt(0)));
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}
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else {
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sb.append(Character.toLowerCase(string.charAt(0)));
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}
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sb.append(string.substring(1));
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return sb.toString();
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}
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public static String[] tokenizeToStringArray(String str, String delimiters) {
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return tokenizeToStringArray(str, delimiters, true, true);
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}
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public static String[] tokenizeToStringArray(
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String str, String delimiters, boolean trimTokens, boolean ignoreEmptyTokens) {
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if (str == null) {
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return null;
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}
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StringTokenizer st = new StringTokenizer(str, delimiters);
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List<String> tokens = new ArrayList<String>();
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while (st.hasMoreTokens()) {
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String token = st.nextToken();
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if (trimTokens) {
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token = token.trim();
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}
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if (!ignoreEmptyTokens || token.length() > 0) {
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tokens.add(token);
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}
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}
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return toStringArray(tokens);
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}
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public static String[] toStringArray(Collection<String> collection) {
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if (collection == null) {
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return null;
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}
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return collection.toArray(new String[collection.size()]);
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}
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public static boolean isEmpty(final CharSequence cs) {
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return cs == null || cs.length() == 0;
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}
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}
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