nandub

String a = String.valueOf(2);   //integer to numeric string  
int i = Integer.parseInt(a); //numeric string to an int

nandub

BufferedWriter out = null;  
try {  
    out = new BufferedWriter(new FileWriter(”filename”, true));  
    out.write(”aString”);  
} catch (IOException e) {  
    // error processing code  
} finally {  
    if (out != null) {  
        out.close();  
    }  

nandub

String methodName = Thread.currentThread().getStackTrace()[1].getMethodName();

nandub

java.util.Date = java.text.DateFormat.getDateInstance().parse(date String);

//or 

SimpleDateFormat format = new SimpleDateFormat( "dd.MM.yyyy" );  
Date date = format.parse( myString );

nandub

public class OracleJdbcTest  
{  
    String driverClass = "oracle.jdbc.driver.OracleDriver";  
  
    Connection con;  
  
    public void init(FileInputStream fs) throws ClassNotFoundException, SQLException, FileNotFoundException, IOException  
    {  
        Properties props = new Properties();  
        props.load(fs);  

nandub

java.util.Date utilDate = new java.util.Date();
java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime());

nandub

public static void fileCopy( File in, File out )
            throws IOException
    {
        FileChannel inChannel = new FileInputStream( in ).getChannel();
        FileChannel outChannel = new FileOutputStream( out ).getChannel();
        try
        {
            // magic number for Windows, 64Mb - 32Kb)
            int maxCount = (64 * 1024 * 1024) - (32 * 1024);
            long size = inChannel.size();

nandub

private void createThumbnail(String filename, int thumbWidth, int thumbHeight, int quality, String outFilename)
		throws InterruptedException, FileNotFoundException, IOException
	{
		// load image from filename
		Image image = Toolkit.getDefaultToolkit().getImage(filename);
		MediaTracker mediaTracker = new MediaTracker(new Container());
		mediaTracker.addImage(image, 0);
		mediaTracker.waitForID(0);
		// use this to test for errors at this point: System.out.println(mediaTracker.isErrorAny());

nandub

//http://viralpatel.net/blogs/2009/02/creating-parsing-json-data-with-java-servlet-struts-jsp-json.html
//http://viralpatel.net/blogs/download/json/json-rpc-1.0.jar

import org.json.JSONObject;
...
...
JSONObject json = new JSONObject();
json.put("city", "Mumbai");
json.put("country", "India");
...

nandub

//http://viralpatel.net/blogs/2009/04/generate-pdf-file-in-java-using-itext-jar.html

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.Date;

import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfWriter;