Java Utililty Methods List Null Empty

List of utility methods to do List Null Empty

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Description

The list of methods to do List Null Empty are organized into topic(s).

Method

booleanisAllElementsNull(List list)
is All Elements Null 
for (Object object : list) {
    if (object != null)
        return false;
return true;
booleanisArrayEmpty(List objList)
is Array Empty 
if (objList == null) {
    return true;
if (objList.size() == 0) {
    return true;
return false;
booleanisCollectionListEmpty()
return collection 
return collectionList.isEmpty();
booleanisCommentOrEmptyLine(int lineIndex, List linesOfFile)
is Comment Or Empty Line 
if (linesOfFile == null || linesOfFile.isEmpty())
    return true;
String lineStr = "";
try {
    lineStr = linesOfFile.get(lineIndex).trim();
} catch (Exception e) {
    return false;
if (lineStr.length() == 0)
    return true;
if (lineStr.indexOf("//") == 0 || lineStr.indexOf("/*") == 0 || lineStr.indexOf("*/") >= 0)
    return true;
int checkIndex = lineIndex - 1;
while (checkIndex >= 0) {
    String previousLineString = linesOfFile.get(checkIndex).trim();
    if (previousLineString.indexOf("/*") == 0)
        return true;
    if (previousLineString.indexOf("*/") >= 0)
        return false;
    checkIndex--;
return false;
booleanisEmpty(Collection list)
is Empty 
return list == null || list.isEmpty();
booleanisEmpty(final List aList)
is Empty 
return !(isNotEmpty(aList));
booleanisEmpty(final List values, final int position)
is Empty 
validate(values, position);
final String value = values.get(position);
return value == null || value.isEmpty();
booleanisEmpty(final List list)
Checks if a List is null or empty. 
return list == null || list.isEmpty();
booleanisEmpty(final List objList)
is Empty 
if (objList == null || objList.isEmpty()) {
    return true;
return false;
booleanisEmpty(java.util.List list)
Determine whether an List is null or empty. 
return list == null || list.size() == 0;