December 13, 2005

The following code demonstrates how to use sun.misc classes for Base64 image conversion: import java.io.*;import java.awt.*;import java.awt.event.*;class Base64Example extends Frame implements ActionListener{Image IMG=null; //image1Image IMGdecode=null; //image2-resultTextArea TA=new TextArea(); //printing the Base64 formButton B=new Button(“Decoder”);byte[] buffer_code=new byte[1024];byte[] buffer_decode;boolean bool=false;//constructorulpublic Base64Example(String titlu) { super(titlu); }void init() { Dimension dim=Toolkit.getDefaultToolkit().getScreenSize(); setSize(550,460); setLocation(dim.width/2-275,dim.height/2-280); setLayout(null);

To implement the GetTickCount API when porting code from Windows to Linux, use the following code: long getTickCount(){ tms tm; return times(&tm);}

To display the shortcut menu, you call ContextMenu.Show() method. Typically, you call this method if the right mouse button on a control or area of the form is clicked. The following snippet demonstrates this: private void myControl_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e){ if (e.Button == MouseButtons.Right) myControl.ContextMenu.Show(myControl, new Point(e.X, e.Y) ); }

Oftentimes, a query will return null values for some of the columns in a query. However, to display “null” as the value in the generated report isn’t a very effective way to display this information. Oracle provides an easy solution for this problem. For example, suppose you are generating a