src/java.base/share/classes/java/lang/CharacterData.java

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*** 26,35 **** --- 26,38 ---- package java.lang; abstract class CharacterData { abstract int getProperties(int ch); abstract int getType(int ch); + abstract boolean isDigit(int ch); + abstract boolean isLowerCase(int ch); + abstract boolean isUpperCase(int ch); abstract boolean isWhitespace(int ch); abstract boolean isMirrored(int ch); abstract boolean isJavaIdentifierStart(int ch); abstract boolean isJavaIdentifierPart(int ch); abstract boolean isUnicodeIdentifierStart(int ch);