package net.minecraft; import java.util.Objects; @FunctionalInterface public interface CharPredicate { boolean test(char c); default CharPredicate and(CharPredicate predicate) { Objects.requireNonNull(predicate); return c -> this.test(c) && predicate.test(c); } default CharPredicate negate() { return c -> !this.test(c); } default CharPredicate or(CharPredicate predicate) { Objects.requireNonNull(predicate); return c -> this.test(c) || predicate.test(c); } }