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:Main.java

public static boolean mapNotEmpty(Map<?, ?> map) {
    return !(null == map || map.size() == 0);
}

From source file:Main.java

public static <T> T getMapOnlyValue(Map<? extends Object, T> map) {
    if (map.size() != 1) {
        throw new IllegalArgumentException("Can't get map only value, it has " + map.size() + " elements");
    }//from   w  ww  .ja  v  a2 s.c om
    return map.values().iterator().next();
}

From source file:Main.java

public static boolean isMapEmpty(Map<?, ?> map) {
    if (map == null || map.size() == 0)
        return true;

    return false;
}

From source file:Main.java

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

From source file:Main.java

public static boolean mapEmpty(Map<?, ?> map) {
    if (null == map || map.size() == 0) {
        return true;
    }/* ww w  . j  a  v  a 2 s .co m*/
    return false;
}

From source file:Main.java

public static <K, V> boolean isEmpty(Map<K, V> map) {
    return map == null || map.size() == 0;
}

From source file:Main.java

public static <T, T2> boolean isNotEmpty(Map<T, T2> map) {
    return (map != null && map.size() != 0);
}

From source file:Main.java

public static <T, T2> boolean isEmpty(Map<T, T2> map) {
    return (map != null && map.size() == 0);
}

From source file:Main.java

public static boolean isEmpty(Map<?, ?> map) {
    if (map == null || map.size() == 0)
        return true;
    return false;
}

From source file:Main.java

public static boolean checkMapIsNotEmpty(Map collection) {
    return (collection != null && collection.size() > 0);
}