Here you can find the source of codePointAt(final char c1, final char c2)
private static int codePointAt(final char c1, final char c2)
//package com.java2s; /*/* w w w.ja v a 2 s. c o m*/ * ============================================================================= * * Copyright (c) 2014, The UNBESCAPE team (http://www.unbescape.org) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * ============================================================================= */ public class Main { private static int codePointAt(final char c1, final char c2) { if (Character.isHighSurrogate(c1)) { if (c2 >= 0) { if (Character.isLowSurrogate(c2)) { return Character.toCodePoint(c1, c2); } } } return c1; } }