Example usage for java.util Map isEmpty

Introduction

In this page you can find the example usage for java.util Map isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this map contains no key-value mappings.

Usage

From source file:Main.java

public static boolean isEmpty(Map<?, ?> map) {
    if (map == null || map.isEmpty()) {
        return true;
    }/*from  ww  w  .  j av  a2s.  c o m*/
    return false;
}

From source file:Main.java

public static boolean isValid(Map<?, ?> map) {
    return map != null && !map.isEmpty();
}

From source file:Main.java

public static <K, V> boolean isNullOrEmpty(final Map<K, V> m) {
    return m == null || m.isEmpty();
}

From source file:Main.java

public static List<NameValuePair> convertMap2List(Map<String, String> params) {
    if (params.isEmpty())
        return null;
    List<NameValuePair> paramList = new ArrayList<NameValuePair>();
    for (Map.Entry<String, String> entry : params.entrySet()) {
        paramList.add(new BasicNameValuePair(entry.getKey().trim(), entry.getValue().trim()));
    }//from  ww  w.  jav a 2 s  .  c  om
    return paramList;
}

From source file:Main.java

/**
 * Checks if a map is null or empty//from w ww.j  a  va  2 s  . c  o  m
 *
 * @param map - the map
 * @return - if it is empty
 * @since 1.0
 */
public static boolean isEmpty(Map map) {
    return map == null || map.isEmpty();
}

From source file:Main.java

public static Boolean isEmpty(Map<?, ?> map) {
    return (map == null || map.isEmpty());
}

From source file:Main.java

public static boolean isBlank(Map map) {
    return (map == null || map.isEmpty());
}

From source file:Main.java

public static boolean isValidate(Map<?, ?> map) {
    return map != null && !map.isEmpty();
}

From source file:Main.java

public static <K, V> boolean isNullOrEmpty(Map<K, V> map) {
    return map == null || map.isEmpty();
}

From source file:Main.java

public static String simpleMapToJsonStr(Map map) {
    if (map == null || map.isEmpty()) {
        return "null";
    }//from  w  ww .j  a v a 2  s  .  c om
    String jsonStr = "{";
    Set<?> keySet = map.keySet();
    for (Object key : keySet) {
        jsonStr += "\"" + key + "\":\"" + map.get(key) + "\",";
    }
    jsonStr = jsonStr.substring(0, jsonStr.length() - 1);
    jsonStr += "}";
    return jsonStr;
}