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 import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.OrientationRequested;
public class Main {
  public static void main(String[] argv) throws Exception {
    // Set up the attribute set
    PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
    aset.add(OrientationRequested.PORTRAIT);
    // aset.add(OrientationRequested.LANDSCAPE);
  }
}  


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3.2. Appender
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3.2.2. ʹÓÃFileAppender
3.2.3. ʹÓÃWriterAppender
3.3. Layout
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import javax.swing.*;
import java.util.Date;
import java.awt.*;
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Thread clockThread;
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