22 lines
672 B
Java
22 lines
672 B
Java
package com.baeldung.string;
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import java.util.Optional;
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class StringHelper {
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static String removeLastChar(String s) {
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return (s == null || s.length() == 0) ? s : (s.substring(0, s.length() - 1));
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}
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static String removeLastCharRegex(String s) {
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return (s == null) ? s : s.replaceAll(".$", "");
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}
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static String removeLastCharOptional(String s) {
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return Optional.ofNullable(s).filter(str -> str.length() != 0).map(str -> str.substring(0, str.length() - 1)).orElse(s);
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}
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static String removeLastCharRegexOptional(String s) {
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return Optional.ofNullable(s).map(str -> str.replaceAll(".$", "")).orElse(s);
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}
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}
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