J2ME Text Box Example

This application illustrates how to create the text box using TextBox class. The TextBox class is a Screen that allows the user to enter and edit text. A TextBox has a maximum size, which is the maximum number of characters that can be stored in the object at any time. The following are the methods used in class:

• delete(int offset, int length)
• getCaretPosition()
• getChars(char[] data)
• getConstraints()
• getMaxSize()
• getString()
• insert(char[] data, int offset, int length, int position)
• insert(String src, int position)
• setChars(char[] data, int offset, int length)
• setConstraints(int constraints)
• setMaxSize(int maxSize)
• setString(String text)
• size()

These methods are accessible in your MIDlet. The application is as follows:

TextBoxMIDlet.java

 

import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class TextBoxMIDlet extends MIDlet{      private Display display;    public TextBoxMIDlet() {     display = Display.getDisplay(this);   }   public void startApp() {     TextBox t = new TextBox("TextBox Example",     "Hello Sandeep Kumar Suman !", 256, 0);     display.setCurrent(t);   }   public void pauseApp() {}   public void destroyApp(boolean unconditional) {} }

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