com.aspose.barcode
Class BarCodeReader

java.lang.Object
  com.aspose.barcode.BarCodeReader

public final class BarCodeReader
extends java.lang.Object

BarCodeReader encapsulates an image, it then perform Read operation to detect one or more barcodes on this image.

        public void paint(Graphics g)
        {
                try
                {
                        Image img = this.getToolkit().getImage("c:\\test.jpg");
                        BarCodeReader reader = new BarCodeReader(img);
                        BarCodeInfo[] results = null;
                        results = reader.read();
                        if(results.length > 0)
                        {
                                g.drawString("barcode found:" + results[0].getCodeText(), 10, 10);
                        }
                        else
                        {
                                g.drawString("barcode not found", 10, 10);
                        }
                } catch (Exception ex)
                {
                        ex.printStackTrace();
                }
        }
 

SYMBOLOGY_CODABAR

public static final long SYMBOLOGY_CODABAR

Specifies Codabar type of barcode

See Also:

com.aspose.barcode.Symbology.CODABAR, Constant Field Values

SYMBOLOGY_CODE11

public static final long SYMBOLOGY_CODE11

Specifies Code11 type of barcode

See Also:

com.aspose.barcode.Symbology.CODE11, Constant Field Values

SYMBOLOGY_CODE39EXTENDED

public static final long SYMBOLOGY_CODE39EXTENDED

Specifies Code39 Extended type of barcode

See Also:

com.aspose.barcode.Symbology.CODE39EXTENDED, Constant Field Values

SYMBOLOGY_CODE39STANDARD

public static final long SYMBOLOGY_CODE39STANDARD

Specifies Code39 Standard type of barcode

See Also:

com.aspose.barcode.Symbology.CODE39STANDARD, Constant Field Values

SYMBOLOGY_CODE93EXTENDED

public static final long SYMBOLOGY_CODE93EXTENDED

Specifies Code93 Extended type of barcode

See Also:

com.aspose.barcode.Symbology.CODE93EXTENDED, Constant Field Values

SYMBOLOGY_CODE93STANDARD

public static final long SYMBOLOGY_CODE93STANDARD

Specifies Code93 Standardtype of barcode

See Also:

com.aspose.barcode.Symbology.CODE93STANDARD, Constant Field Values

SYMBOLOGY_EAN13

public static final long SYMBOLOGY_EAN13

Specifies EAN13 type of barcode

See Also:

com.aspose.barcode.Symbology.EAN13, Constant Field Values

SYMBOLOGY_EAN8

public static final long SYMBOLOGY_EAN8

Specifies EAN8 type of barcode

See Also:

com.aspose.barcode.Symbology.EAN8, Constant Field Values

SYMBOLOGY_INTERLEAVED2OF5

public static final long SYMBOLOGY_INTERLEAVED2OF5

Specifies Interleaved 2 of 5 type of barcode

See Also:

com.aspose.barcode.Symbology.INTERLEAVED2OF5, Constant Field Values

SYMBOLOGY_MSI

public static final long SYMBOLOGY_MSI

Specifies MSI type of barcode

See Also:

com.aspose.barcode.Symbology.MSI, Constant Field Values

SYMBOLOGY_STANDARD2OF5

public static final long SYMBOLOGY_STANDARD2OF5

Specifies Standard 2 of 5 type of barcode

See Also:

com.aspose.barcode.Symbology.STANDARD2OF5, Constant Field Values

SYMBOLOGY_UPCA

public static final long SYMBOLOGY_UPCA

Specifies UPCA type of barcode

See Also:

com.aspose.barcode.Symbology.UPCA, Constant Field Values

SYMBOLOGY_UPCE

public static final long SYMBOLOGY_UPCE

Specifies UPCE type of barcode

See Also:

com.aspose.barcode.Symbology.UPCE, Constant Field Values

SYMBOLOGY_EAN128

public static final long SYMBOLOGY_EAN128

Specifes Ean128 type of barcode

See Also:

com.aspose.barcode.Symbology.EAN128, Constant Field Values

SYMBOLOGY_PDF417

public static final long SYMBOLOGY_PDF417

Specifies PDF417 type of barcode

See Also:

com.aspose.barcode.Symbology.PDF417, Constant Field Values

SYMBOLOGY_MACROPDF417

public static final long SYMBOLOGY_MACROPDF417

Specifies PDF417 type of barcode

See Also:

com.aspose.barcode.Symbology.PDF417, Constant Field Values

SYMBOLOGY_DATAMATRIX

public static final long SYMBOLOGY_DATAMATRIX

Specifes Datamatrix type of barcode

See Also:

com.aspose.barcode.Symbology.DATAMATRIX, Constant Field Values

SYMBOLOGY_AZTEC

public static final long SYMBOLOGY_AZTEC

Specifies Aztec type of barcode

See Also:

com.aspose.barcode.Symbology.AZTEC, Constant Field Values

SYMBOLOGY_QR

public static final long SYMBOLOGY_QR

Specifies QR type of barcode

See Also:

com.aspose.barcode.Symbology.QR, Constant Field Values

SYMBOLOGY_ITF14

public static final long SYMBOLOGY_ITF14

Specifes ITF14 type of barcode

See Also:

com.aspose.barcode.Symbology.ITF14, Constant Field Values

SYMBOLOGY_EAN14

public static final long SYMBOLOGY_EAN14

Specifies EAN14 type of barcode

See Also:

com.aspose.barcode.Symbology.EAN14, Constant Field Values

SYMBOLOGY_SSCC18

public static final long SYMBOLOGY_SSCC18

Specifies SSCC18 type of barcode

See Also:

com.aspose.barcode.Symbology.SSCC18, Constant Field Values

SYMBOLOGY_PLANET

public static final long SYMBOLOGY_PLANET

Specifies Planet type of barcode

See Also:

com.aspose.barcode.Symbology.PLANET, Constant Field Values

SYMBOLOGY_POSTNET

public static final long SYMBOLOGY_POSTNET

Specifies Postnet type of barcode

See Also:

com.aspose.barcode.Symbology.POSTNET, Constant Field Values

ORIENTATION_EAST

public static final int ORIENTATION_EAST

Specifies scanning direction from left to right

See Also:

com.aspose.barcode.Orientation.East, Constant Field Values

ORIENTATION_WEST

public static final int ORIENTATION_WEST

Specifies scanning direction from right to left

See Also:

com.aspose.barcode.Orientation.West, Constant Field Values

ORIENTATION_SOUTH

public static final int ORIENTATION_SOUTH

Specifies scanning direction from top to bottom

See Also:

com.aspose.barcode.Orientation.South, Constant Field Values

ORIENTATION_NORTH

public static final int ORIENTATION_NORTH

Specifies scanning direction from bottom to top

See Also:

com.aspose.barcode.Orientation.North, Constant Field Values

BarCodeReader

public BarCodeReader(java.awt.Image image)
              throws java.lang.Exception

Instantiates x barcode reader to detect barcodes from the specified image

Parameters:

image - of Image

Throws:

java.lang.Exception - when image format not supported

getSymbology

public long getSymbology()

Gets the symbology settings.

Returns:

Symbology

setSymbology

public void setSymbology(long value)

Sets the symbology for target barcode. Assign -1 for all symbologies.

Example

        public void paint(Graphics g)
        {
                try
                {
                        Image img = this.getToolkit().getImage("c:\\test.jpg");
                        BarCodeReader reader = new BarCodeReader(img);
                        //Target barcode would be EAN13 or UPCA
                        reader.setSymbology(Symbology.EAN13 | Symbology.UPCA);
                        BarCodeInfo[] results = null;
                        results = reader.read();
                        if(results.length > 0)
                        {
                                g.drawString("barcode found:" + results[0].getCodeText(), 10, 10);
                        }
                        else
                        {
                                g.drawString("barcode not found", 10, 10);
                        }
                } catch (Exception ex)
                {
                        ex.printStackTrace();
                }
        }
 

Parameters:

value -

See Also:

Symbology

getVerifyChecksum

public boolean getVerifyChecksum()

Gets whether verify the checksum of x detected barcode. Wrong checksum of x detected barcode will be ignored if setVerifyChecksum is set to true.

Returns:

Wether or not to verify the checksum of the barcode found

See Also:

setVerifyChecksum(boolean)

setVerifyChecksum

public void setVerifyChecksum(boolean value)

Sets whether verify the checksum of x detected barcode. Wrong checksum of x detected barcode will be ignored if it is set to true.

Parameters:

value -

See Also:

getVerifyChecksum()

getScanStep

public int getScanStep()

Gets how many pixels reader advances at one time. Increase scan step could increase speed for large pictures but would be less accurate.

Returns:

int

See Also:

setScanStep(int)

setScanStep

public void setScanStep(int value)

Sets how many pixels reader advances at one time. Increase scan step could increase speed for large pictures but would be less accurate.

Parameters:

value - of int

See Also:

getScanStep()

getOrientation

public int getOrientation()

Sets the scan direction for BarCodeReader. Set to -1 for two dimentional barcodes

Returns:

int

See Also:

setOrientation(int), Orientation

setOrientation

public void setOrientation(int value)

Sets the scan direction for BarCodeReader. Set to -1 for two dimentional barcodes

Parameters:

value -

See Also:

getOrientation(), Orientation

getDetectSupplement

public boolean getDetectSupplement()

Gets whether to detect supplement barcode for EAN13, EAN8, BooklandEAN, UPCA, UPCE barcode.

Returns:

boolean

See Also:

setDetectSupplement(boolean), com.aspose.barcode.BarCodeInfo.hasSupplement(), com.aspose.barcode.BarCodeInfo.getSupplementInfo()

setDetectSupplement

public void setDetectSupplement(boolean value)

Sets whether to detect supplenent barcode for EAN13, EAN8, BooklandEAN, UPCA, UPCE barcode.

Parameters:

value - of boolean

See Also:

getDetectSupplement(), com.aspose.barcode.BarCodeInfo.hasSupplement(), com.aspose.barcode.BarCodeInfo.getSupplementInfo()

setImage

public void setImage(java.awt.Image value)
              throws java.lang.Exception

Sets the image for reader to scan

Parameters:

value - of Image

Throws:

java.lang.Exception - when image format not supported

read

public BarCodeInfo[] read()
                   throws java.lang.Exception

Scan the image for barcodes.

Example public void paint(Graphics g) { try { Image img = this.getToolkit().getImage("c:\\test.jpg"); BarCodeReader reader = new BarCodeReader(img); BarCodeInfo[] results = null; results = reader.read(); if(results.length > 0) { g.drawString("barcode found:" + results[0].getCodeText(), 10, 10); } else { g.drawString("barcode not found", 10, 10); } } catch (Exception ex) { ex.printStackTrace(); } }

Throws:

java.lang.Exception

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