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import java.awt.Dimension;
import javax.swing.JFrame;
public class Window {
public static void main(String[] args) {
JFrame frame=new JFrame();
frame.setPreferredSize(new Dimension(800,600));
frame.pack();
frame.setVisible(true);
}
}
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package cn.com;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class Base64Test
{
public static void main(String[ ......