Example usage for java.lang String isEmpty

Introduction

In this page you can find the example usage for java.lang String isEmpty.

Prototype

public boolean isEmpty()

Source Link

Document

Returns true if, and only if, #length() is 0 .

Usage

From source file:Main.java

public static <T> T fromJson(String jsonInString, Class<T> responseType) {
    try {//ww  w . j  a  va 2  s.c o  m

        if (jsonInString == null || !jsonInString.isEmpty()) {
            return (T) gson.fromJson(jsonInString, responseType);
        }
        return null;
    } catch (Exception ex) {
        return null;
    }
}

From source file:onl.area51.httpd.util.ContentTypeResolver.java

public static ContentType resolve(String path) {
    if (path != null && !path.isEmpty()) {
        int i = path.lastIndexOf('.');
        int j = path.lastIndexOf('/');
        if (i > -1 && i > j) {
            return CONTENT_TYPES.getOrDefault(path.substring(i).toLowerCase(), APPLICATION_OCTET_STREAM);
        }/*from   w ww  . ja v  a  2s. co m*/
    }
    return ContentType.APPLICATION_OCTET_STREAM;
}

From source file:Main.java

public static int getKlassenstufe(String klassenname) throws NumberFormatException {
    if (klassenname.isEmpty()) {
        return 0;
    }//from w ww. ja  va  2  s  .co  m
    String klassenstufe = klassenname.substring(0, 1);
    if (keineKlassenstufeEnthalten(klassenstufe)) {
        return 0;
    }
    if (klassenname.length() > 1) {
        if (Integer.valueOf(klassenstufe) == 1) {
            if (klassenname.substring(1, 2).equals("0")) {
                return Integer.valueOf(klassenname.substring(0, 2));
            }
        }
    }
    return Integer.valueOf(klassenstufe);
}

From source file:Main.java

@SuppressLint("NewApi")
public static boolean isGetListSuccess(String listjson) {
    if (listjson == null) {
        return false;
    }//from  w ww .  j  a v a 2 s .  c om
    if (listjson.isEmpty()) {
        return false;
    }
    if (listjson.contains("error_code")) {
        return false;
    } else {
        return true;
    }

}

From source file:Main.java

/**
 * Returns the IMEI Number./*from w  w w  .ja v a  2s .  c  o  m*/
 * @return - Device IMEI number.
 */
public static String getDeviceId(Context context) {
    TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    String deviceId = telephonyManager.getDeviceId();

    if (deviceId == null || deviceId.isEmpty()) {
        deviceId = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
    }

    return deviceId;
}

From source file:Main.java

/**
 * @param filePath filePath example("pictures")
 *//*from w  w w. ja  va  2  s.c  om*/
public static List<String> traversalAssetsFiles(Context context, String filePath) {
    List<String> files = new ArrayList<>();
    try {
        for (String file : context.getAssets().list(filePath)) {
            if (file != null && !file.isEmpty()) {
                if (file.endsWith(".jpg") || file.endsWith(".gif") || file.endsWith(".png")) {
                    files.add(file);
                }
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return files;
}

From source file:Main.java

private static int[] longestSubstring(String str1, String str2) {
    if (str1 == null || str1.isEmpty() || str2 == null || str2.isEmpty())
        return null;

    // dynamic programming => save already identical length into array
    // to understand this algo simply print identical length in every entry of the array
    // i+1, j+1 then reuses information from i,j
    // java initializes them already with 0
    int[][] num = new int[str1.length()][str2.length()];
    int maxlen = 0;
    int lastSubstrBegin = 0;
    int endIndex = 0;
    for (int i = 0; i < str1.length(); i++) {
        for (int j = 0; j < str2.length(); j++) {
            if (str1.charAt(i) == str2.charAt(j)) {
                if ((i == 0) || (j == 0))
                    num[i][j] = 1;/*  ww w. j ava 2 s. co  m*/
                else
                    num[i][j] = 1 + num[i - 1][j - 1];

                if (num[i][j] > maxlen) {
                    maxlen = num[i][j];
                    // generate substring from str1 => i
                    lastSubstrBegin = i - num[i][j] + 1;
                    endIndex = i + 1;
                }
            }
        }
    }
    return new int[] { lastSubstrBegin, endIndex };
}

From source file:Main.java

/**
 * Returns the {@code Class} object associated with the given {@link Type}
 * depending on its fully qualified name.
 *
 * @param type the {@code Type} whose {@code Class} is needed.
 * @return the {@code Class} object for the class with the specified name.
 *
 * @throws ClassNotFoundException if the class cannot be located.
 *
 * @see {@link ReflectionUtils#getClassName(Type)}
 *//* w w w  . j a  v  a2  s.  co  m*/
public static Class<?> getClass(Type type) throws ClassNotFoundException {
    String className = getClassName(type);
    if (className == null || className.isEmpty()) {
        return null;
    }
    return Class.forName(className);
}

From source file:Main.java

public static String domainToAscii(String input) {
    try {//  www . j  a  v a 2s.c o m
        String result = IDN.toASCII(input).toLowerCase(Locale.US);
        if (result.isEmpty())
            return null;
        if (containsInvalidHostnameAsciiCodes(result)) {
            return null;
        }
        return result;
    } catch (IllegalArgumentException e) {
        return null;
    }
}

From source file:Main.java

public static String cloneString(final String toClone) {
    if (toClone == null) {
        return null;
    }//from   w  ww.j av  a2s. com
    if (toClone.isEmpty()) {
        return new String("").concat(new String(""));
    }

    if (toClone.length() == 1) {
        return String.valueOf(toClone.charAt(0));
    }

    return toClone.substring(0, 1) + toClone.substring(1);
}