public PDLineDashPattern() 
{
        lineDashPattern = new COSArray();
        lineDashPattern.add( new COSArray() );
        lineDashPattern.add( COSInteger.ZERO );
}

Creates a blank line dash pattern. With no dashes and a phase of 0.

 public PDLineDashPattern(COSArray ldp) 
{
        lineDashPattern = ldp;
}

Constructs a line dash pattern from an existing array.

Parameters:

ldp - The existing line dash pattern.

 public PDLineDashPattern(COSArray ldp,
    int phase) 
{
        lineDashPattern = new COSArray();
        lineDashPattern.add( ldp );
        lineDashPattern.add( COSInteger.get( phase ) );
}

Constructs a line dash pattern from an existing array.

Parameters:

ldp - The existing line dash pattern.

phase - The phase for the line dash pattern.

 public Object clone() 
{
        PDLineDashPattern pattern = null;
        try
        {
            pattern = (PDLineDashPattern)super.clone();
            pattern.setDashPattern(getDashPattern());
            pattern.setPhaseStart(getPhaseStart());
        }
        catch(CloneNotSupportedException exception)
        {
            exception.printStackTrace();
        }
        return pattern;
}

{@inheritDoc}

 public COSArray getCOSDashPattern() 
{
        return (COSArray)lineDashPattern.get( 0 );
}

Get the line dash pattern as a COS object.

 public COSBase getCOSObject() 
{
        return lineDashPattern;
}

{@inheritDoc}

 public List getDashPattern() 
{
        COSArray dashPatterns = (COSArray)lineDashPattern.get( 0 );
        return COSArrayList.convertIntegerCOSArrayToList( dashPatterns );
}

This will return a list of java.lang.Integer objects that represent the line dash pattern appearance.

 public int getPhaseStart() 
{
        COSNumber phase = (COSNumber)lineDashPattern.get( 1 );
        return phase.intValue();
}

This will get the line dash pattern phase. The dash phase specifies the distance into the dash pattern at which to start the dash.

 public boolean isDashPatternEmpty() 
{
        float[] dashPattern = getCOSDashPattern().toFloatArray();
        boolean dashPatternEmpty = true;
        if (dashPattern != null) 
        {
            int arraySize = dashPattern.length;
            for(int i=0;i< arraySize;i++) 
            {
                if (dashPattern[i]  > 0) 
                {
                    dashPatternEmpty = false;
                    break;
                }
            }
        }
        return dashPatternEmpty;
}

Checks if the dashPattern is empty or all values equals 0.

 public  void setDashPattern(List dashPattern) 
{
        lineDashPattern.set( 0, COSArrayList.converterToCOSArray( dashPattern ) );
}

This will replace the existing line dash pattern.

 public  void setPhaseStart(int phase) 
{
        lineDashPattern.set( 1, phase );
}

This will set the line dash pattern phase.