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A Java OCR SDK Library API allows you to perform OCR and bar code recognition on images (JPEG, PNG, TIFF, PDF, etc.) and output as plain text, xml with full coordinate, searchable PDF or editable RTF.
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/**********************************************************************************************
 *
 * Asprise OCR Java API
 * Copyright (C) 1998-2015. Asprise Inc. 
 *
 * This file is licensed under the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation.
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * You should have received a copy of the GNU Affero General Public License.  If not, please
 * visit .
 *
 **********************************************************************************************/

package com.asprise.ocr.sample;

import com.asprise.ocr.sample.util.ActionBase;

import javax.swing.JOptionPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import java.awt.Component;
import java.awt.Container;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionEvent;
import java.util.GregorianCalendar;


public class PanelLogging extends javax.swing.JPanel {

    ActionBase actionCopyLogs = new ActionBase("Copy") {
        @Override
        public void actionPerformed(ActionEvent e) {
            setClipboard(textLogging.getText());
            JOptionPane.showMessageDialog(getContainingWindow(PanelLogging.this), "Logs have been copied to system clipboard successfully.");
        }
    };

    ActionBase actionClearLogs = new ActionBase("Clear") {
        @Override
        public void actionPerformed(ActionEvent e) {
            textLogging.setText("");
        }
    };

    
    public PanelLogging() {
        initComponents();
        init();
    }

    void init() {

        DemoUtils.enableMenu(textLogging);
    }

    
    public void log(String mesg) {
        logAndScrollToBottom(textLogging, formatMessage(mesg));
    }

    private static void logAndScrollToBottom(final JTextArea textArea, final String mesg) {
        if(! SwingUtilities.isEventDispatchThread()) {
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    logAndScrollToBottom(textArea, mesg);
                }
            });
            return;
        }
        textArea.append(textArea.getText().length() == 0 ? mesg : "\n" + mesg);

        String text = textArea.getText();
        if(text.length() > 2) {
            int lastLinePos = text.lastIndexOf("\n", text.length() - 2);
            if(lastLinePos > 0) {
                textArea.setCaretPosition(lastLinePos + 1); 
            }
        }
    }

    String formatMessage(String mesg) {
        String threadName = Thread.currentThread().getName();
        if(threadName.length() > 10) {
            threadName = threadName.substring(threadName.length() - 10, threadName.length());
        }
        return String.format("%1$tH:%1$tM:%1$tS.%1$tL %2$-10s %3$s", new GregorianCalendar(), threadName, mesg);
    }


    
    public static void setClipboard(String content) {
        StringSelection ss = new StringSelection(content);
        Toolkit.getDefaultToolkit().getSystemClipboard().setContents(ss, null);
    }

    public static Window getContainingWindow(Component component) {
        if(component == null)
            return null;

        Container container = component.getParent();

        while(true) {
            if(container == null)
                return null;

            if(container instanceof Window)
                return (Window)container;

            container = container.getParent();
        }
    }

    
    @SuppressWarnings("unchecked")

    private void initComponents() {

        jScrollPane1 = new javax.swing.JScrollPane();
        textLogging = new javax.swing.JTextArea();

        textLogging.setEditable(false);
        textLogging.setBackground(new java.awt.Color(214, 240, 240));
        textLogging.setColumns(20);
        textLogging.setFont(new java.awt.Font("Monospaced", 0, 12)); 
        textLogging.setRows(5);
        jScrollPane1.setViewportView(textLogging);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 209, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1)
        );
    }



    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea textLogging;

}