Strings.java

/*
 * (C) Copyright 2015-2016 the original author or authors.
 *
 * 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.
 *
 * Contributors:
 *   ohun@live.cn (夜色)
 */

package com.mpush.tools.common;

/**
 * Created by ohun on 2015/12/23.
 *
 * @author ohun@live.cn
 */
public final class Strings {
    public static final String EMPTY = "";

    public static boolean isBlank(CharSequence text) {
        if (text == null || text.length() == 0) return true;
        for (int i = 0, L = text.length(); i < L; i++) {
            if (!Character.isWhitespace(text.charAt(i))) return false;
        }
        return true;
    }

    public static String trimAll(CharSequence s) {
        if (s == null || s.length() == 0) return Strings.EMPTY;
        StringBuilder sb = new StringBuilder(s.length());
        for (int i = 0, L = s.length(); i < L; i++) {
            char c = s.charAt(i);
            if (c != ' ') sb.append(c);
        }
        return sb.toString();
    }
}