<p>
Determines whether the target object is null or not.
</p>

@return true if the target object is null, false if not.
198733
public static final Function<BigDecimal,Boolean> isNull() {
        return (Function<BigDecimal,Boolean>)((Function)FnObject.isNull());
    }
1174630
@SuppressFBWarnings(justification = "Accepting that this is a bad practice - but made more sense in this use case",
            value = {"NP_BOOLEAN_RETURN_NULL"})
    public Boolean isExperimentalEnabled() {
        return (line != null && line.hasOption(ARGUMENT.EXPERIMENTAL)) ? true : null;
    }
1151974
public static boolean isNull(Cursor cursor, String columnName) {
        return cursor != null && cursor.isNull(cursor.getColumnIndex(columnName));

    }
160358
public static boolean isNull( Object obj ) {
      if( obj instanceof JSONObject ){
         return ((JSONObject) obj).isNullObject();
      }
      return JSONNull.getInstance()
            .equals( obj );
   }
1295813
public Boolean asBooleanObj() {
		if (current == null)
			return null;
		if (current instanceof Boolean)
			return (Boolean) current;
		return null;
	}
1159892
public boolean isLeader() {
    MemberId leader = this.leader;
    return leader != null && leader.equals(cluster.getMember().memberId());
  }
1074501
public boolean booleanValue()
    {
        final String value = getInternal(null, false);
        if (value == null) {
            return false;
        }
        return toBoolean(value);
    }
350492
protected boolean checkConnection()
    {
        super.checkConnection();
        try
        {
            if (_jarConnection!=_connection)
                newConnection();
        }
        catch(IOException e)
        {
            LogSupport.ignore(log,e);
            _jarConnection=null;
        }
        
        return _jarConnection!=null;
    }
226815
public final boolean isAjaxTargeted() {
		// If the AJAX target is within the dialog, it should be visible.
		AjaxOperation operation = AjaxHelper.getCurrentOperation();
		if (operation == null) {
			return false;
		}

		String dialogId = getId();
		String containerId = operation.getTargetContainerId();

		if (containerId != null && containerId.startsWith(dialogId)) {
			// target is the dialog, or somewhere within the dialog
			return true;
		}

		if (operation.getTargets() != null && UIContextHolder.getCurrent() != null) {
			for (String targetId : operation.getTargets()) {
				if (targetId.startsWith(dialogId)) {
					return true;
				}
			}
		}
		return false;
	}
586209
public static final Function<Number,Boolean> isNotNull() {
        return (Function<Number,Boolean>)((Function)FnObject.isNotNull());
    }
977236
public boolean isSet() {
        if (isUsageMode()) {
            return true;
        }
        if (getJobFile() != null) {
            return true;
        }
        if (getListType() != null) {
            return true;
        }
        return false;
    }
1150945
public boolean any(Object... targets) {
		if (null == targets) { return null == this.delegate; }
		
		for (Object target : targets) {
			if (null == target) { if (null == this.delegate) { return true; } continue; }
			if (target == this.delegate) { return true; }
		}
		
		return false;
	}
256373
public boolean isNull(int index) {
        Object value = opt(index);
        return value == null || value.equals(JSON_NULL);
    }
183931
public static boolean noNulls(final Object... objects) {
        if (objects == null) return false;
        for (final Object object : objects) {
            if (object == null) return false;
        }
        return true;
    }
1086846
public static boolean atLeastOneNotNull(final Object... o1s) {
        if (o1s != null && o1s.length > 0) {
            for (final Object o1 : o1s) {
                if (o1 != null) {
                    return true;
                }
            }
        }
        return false;
    }
667275
private boolean isNull(Field field, Object obj) {
    try {
      if (!field.isAccessible()) {
        field.setAccessible(true);
      }
      return field.get(obj) == null;
    } catch (Exception e) {
      e.printStackTrace();
    }

    return false;
  }
483047
@Contract(value = "null -> false; !null -> true", pure = true)
    public static boolean nonNull(@Nullable Object obj) {
        return obj != null;
    }