import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.util.*;
import sun.audio.*;
import java.applet.*;
import java.math.*;


i wanna develope steganografi app in android but i need all of these java function in my program..
can i use it?

hmm, why would u need to use swing? its only for desktop ui programming

No you cannot. Only certain APIs are supported. Check out the developers site for a list of APIs that are contained int he Android SDK.
http://developer.android.com/reference/packages.html

Note that there are many third party APIs that are also supported, but not mentioned on this list. You will have to find these on your own.