Example usage for java.util Collection isEmpty

Introduction

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

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this collection contains no elements.

Usage

From source file:Main.java

public static <T> boolean isNullOrEmpty(Collection<T> collection) {
    return collection == null || collection.isEmpty();
}

From source file:Main.java

public static <T> boolean isNullOrEmpty(Collection<T> collection) {
    return null == collection || collection.isEmpty();
}

From source file:Main.java

public static boolean isEmpty(Collection collection) {
    return null == collection || collection.isEmpty();
}

From source file:Main.java

public static <E> List<E> copyNullSafeList(Collection<? extends E> list) {
    if (list.isEmpty()) {
        return Collections.emptyList();
    }/*  w  w w.  j  av  a  2s.  co  m*/
    return Collections.unmodifiableList(copyNullSafeMutableList(list));
}

From source file:Main.java

/**
 * Like {@link Collections#max(java.util.Collection)} except with a default value returned in the
 * case of an empty collection.//from  ww w .ja  v a2 s .  co m
 */
public static <T extends Comparable<T>> T maxOr(Collection<T> values, T defaultVal) {
    if (values.isEmpty()) {
        return defaultVal;
    } else {
        return Collections.max(values);
    }
}

From source file:Main.java

public static boolean isEmpty(Collection<?> c) {
    return null == c || c.isEmpty();
}

From source file:Main.java

/**
 * Like {@link Collections#min(java.util.Collection)} except with a default value returned in the
 * case of an empty collection./* w  w  w. ja  v a  2s.  c  o m*/
 */
public static <T extends Comparable<T>> T minOr(Collection<T> values, T defaultVal) {
    if (values.isEmpty()) {
        return defaultVal;
    } else {
        return Collections.min(values);
    }
}

From source file:Main.java

public static <T> boolean isEmpty(Collection<T> collect) {
    return collect == null || collect.isEmpty();
}

From source file:Main.java

public static boolean isEmpty(Collection<?> col) {
    return col != null && col.isEmpty();
}

From source file:Main.java

public static boolean isEmpty(Collection<?> collection) {
    return null == collection || collection.isEmpty();
}