StringUtils.java

package com.dahanis.utils.bluetoothprinter;

/**
 * Created By: Seal.Wu
 * Date: 2015/12/18
 * Time: 15:10
 */
class StringUtils {

    public static boolean equals(String str1, String str2) {
        return str1 == null ? str2 == null : str1.equals(str2);
    }
    public static boolean isEmpty(String str) {
        return str == null || str.length() == 0;
    }

    /**
     * <p>Checks if a String is not empty ("") and not null.</p>
     * <p/>
     * <pre>
     * StringUtils.isNotEmpty(null)      = false
     * StringUtils.isNotEmpty("")        = false
     * StringUtils.isNotEmpty(" ")       = true
     * StringUtils.isNotEmpty("bob")     = true
     * StringUtils.isNotEmpty("  bob  ") = true
     * </pre>
     *
     * @param str the String to check, may be null
     * @return <code>true</code> if the String is not empty and not null
     */
    public static boolean isNotEmpty(String str) {
        return !StringUtils.isEmpty(str);
    }
}