Example usage for java.util Map size

Introduction

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

Prototype

int size();

Source Link

Document

Returns the number of key-value mappings in this map.

Usage

From source file:com.excilys.ebi.spring.dbunit.utils.ApplicationContextUtils.java

public static <T> T getOptionalUniqueBeanOfType(ApplicationContext applicationContext, Class<T> type) {
    Map<String, T> configs = applicationContext.getBeansOfType(type);

    isTrue(configs.size() <= 1, "found more than one bean in the applicationContext");

    return configs.size() == 1 ? configs.values().iterator().next() : null;
}

From source file:Main.java

public static int sizeOf(Map<?, ?> map) {
    if (map == null) {
        return 0;
    }/*from  ww w  . ja  v a 2 s . c  o m*/
    return map.size();
}

From source file:Main.java

public final static <K, V> String join(Map<K, V> map, String separator, String separator1) {
    if (map == null || map.size() == 0) {
        return "";
    }/*from  ww w .  java  2s  .c o m*/
    StringBuilder sb = new StringBuilder();
    for (Map.Entry<K, V> entry : map.entrySet()) {
        sb.append(String.valueOf(entry.getKey())).append(separator1).append(String.valueOf(entry.getValue()))
                .append(separator);
    }
    return sb.toString().substring(0, sb.toString().length() - separator.length());
}

From source file:Main.java

/**
 * //w  w  w. j a  v a 2 s  . c om
 * @param pressingLength length of pause between clicks
 * @param mathExpectation mathExpectation values list 
 * @return dispersion values list
 */
public static List<Double> dispersion(Map<String, Long> pressingLength, List<Double> mathExpectation) {
    int N = pressingLength.size() - 1;
    //dispersion
    int i = 0;
    ArrayList<Double> dispersion = new ArrayList<Double>();
    for (String key : pressingLength.keySet()) {
        double x;
        double s = 0.0;
        for (String k : pressingLength.keySet()) {
            if (!k.equals(key)) {
                x = pressingLength.get(k) - mathExpectation.get(i);
                s += x * x;
            }
        }
        dispersion.add(sqrt(s / (N - 1)));
        i++;
    }
    return dispersion;
}

From source file:Main.java

public static String map2String(Map<String, String> map) {
    StringBuilder result = new StringBuilder();

    if (map == null || map.size() == 0)
        return "";

    for (String key : map.keySet()) {
        result.append(key).append("=").append(map.get(key)).append("&");
    }/*w w w. j  a v a  2s . com*/
    return result.substring(0, result.length() - 1);
}

From source file:com.quartercode.eventbridge.test.ExtraAssert.java

public static void assertMapEquals(String message, Map<?, ?> map, Pair<?, ?>... entries) {

    assertTrue(message, map.size() == entries.length);

    Map<?, ?> mapClone = new HashMap<>(map);
    for (Pair<?, ?> expectedEntry : entries) {
        Object actualValue = mapClone.get(expectedEntry.getKey());
        assertTrue(message, Objects.equals(expectedEntry.getValue(), actualValue));

        mapClone.remove(expectedEntry.getKey());
    }//from   w ww  .  java 2s . co m
}

From source file:Main.java

public static void printDetails(Map<String, String> map) {
    String usage = map.get("CSS");
    System.out.println("Map: " + map);
    System.out.println("Map Size:  " + map.size());
    System.out.println("Map is empty:  " + map.isEmpty());
    System.out.println("Map contains CSS key:   " + map.containsKey("CSS"));
    System.out.println("Usage:  " + usage);
    System.out.println("removed:  " + map.remove("CSS"));
}

From source file:Main.java

/**
 * returns a new HashMap containing a shallow clone of the
 * original map./*from  w w  w .j a v a2 s .c o m*/
 * @param origMap
 * @return
 */
public static <K, V> HashMap<K, V> clone(Map<K, V> origMap) {

    HashMap<K, V> newMap = new HashMap<K, V>();
    if (origMap != null && origMap.size() > 0) {
        newMap.putAll(origMap);
    }
    return newMap;
}

From source file:com.shouyingbao.pbs.core.framework.spring.context.utils.SpringContextUtil.java

/**
 * ?Class?//from  w ww. j  a  v  a  2  s. c  om
 * @param type
 * @return
 */
public static <T> T getBeanOfType(Class<T> type) {
    Map<String, T> beans = getBeansOfType(type);
    if (beans.size() == 0) {
        throw new NoSuchBeanDefinitionException(type,
                "Unsatisfied dependency of type [" + type + "]: expected at least 1 matching bean");
    }
    if (beans.size() > 1) {
        throw new NoSuchBeanDefinitionException(type,
                "expected single matching bean but found " + beans.size() + ": " + beans.keySet());
    }
    return beans.values().iterator().next();
}

From source file:Main.java

/**
 * Utility method that return a String representation of a map. The elements
 * will be represented as "key = value"/*from   w w w  . ja v a2  s .  c  o m*/
 * 
 * @param map
 *            The map to transform to a string
 * @return A csv string
 */
public static final String mapToString(Map map, String tabs) {
    if ((map == null) || (map.size() == 0)) {
        return "";
    }

    StringBuffer sb = new StringBuffer();

    Iterator iter = map.keySet().iterator();

    while (iter.hasNext()) {
        Object key = iter.next();
        sb.append(tabs);
        sb.append(key);
        Object value = map.get(key);

        sb.append(" = '").append(value.toString()).append("'\n");
    }

    return sb.toString();
}