Example usage for java.util List isEmpty

Introduction

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

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this list contains no elements.

Usage

From source file:Main.java

public static <T> boolean isEmpty(List<T> list) {
    if (list == null || list.isEmpty()) {
        return true;
    }/*  w  w  w.  j  ava  2 s.  c o  m*/
    return false;
}

From source file:Main.java

public static boolean isEmpty(List list) {
    if (list != null && !list.isEmpty()) {
        return false;
    }/*from  w ww .j a  v a 2s. co m*/
    return true;
}

From source file:Main.java

public static Object[] toArrayOnListOfSameType(List aList) {
    if (aList.isEmpty())
        return new Object[0];

    Class type = aList.get(0).getClass();
    Object[] sameElementsArray = (Object[]) Array.newInstance(type, aList.size());
    return aList.toArray(sameElementsArray);
}

From source file:Main.java

public static <T> T getHead(List<T> list) {
    if (list == null || list.isEmpty()) {
        return null;
    }/*from   w w w  . ja v  a  2s  . c  o  m*/
    return list.get(0);
}

From source file:Main.java

public static <T> T getTail(List<T> list) {
    if (list == null || list.isEmpty()) {
        return null;
    }//from w  w w.  ja  v  a 2  s .c om
    return list.get(list.size() - 1);
}

From source file:Main.java

public static boolean isNullOrEmpty(List list) {
    return list == null || list.isEmpty();
}

From source file:Main.java

public static boolean isNullOrEmpty(List<?> list) {
    return list == null || list.isEmpty();
}

From source file:Main.java

public static <E> boolean validate(List<E> list) {
    return list != null && !list.isEmpty();
}

From source file:Main.java

public static boolean isListEmpty(List<?> list) {
    return list == null || list.isEmpty();
}

From source file:Main.java

public static boolean any(List<?> list) {
    return (list != null && !list.isEmpty());
}