import javax.print.attribute.standard.PrinterLocation; //导入依赖的package包/类
public PrintServiceAttributeSet getAttributes() {
    PrintServiceAttributeSet attributes =
        new HashPrintServiceAttributeSet();
    attributes.add(new PrinterName(serviceName, Locale.getDefault()));
    if (getColorSupported(serviceName)) {
        attributes.add(ColorSupported.SUPPORTED);
        int colorPPM = getPagesPerMinuteColor(serviceName);
        if (colorPPM > 0) {
            attributes.add(new PagesPerMinuteColor(colorPPM));
        }
    } else {
        attributes.add(ColorSupported.NOT_SUPPORTED);
    }
    
    int pagesPerMinute = getPagesPerMinute(serviceName);
    if (pagesPerMinute > 0) {
        attributes.add(new PagesPerMinute(pagesPerMinute));
    }
    
    String printerLocation = getPrinterLocation(serviceName);
    if (printerLocation != null) {
        attributes.add(new PrinterLocation(printerLocation,
                Locale.getDefault()));
    }
    
    int acceptingJobs = getPrinterIsAcceptingJobs(serviceName);
    if (acceptingJobs == 0) {
        attributes.add(PrinterIsAcceptingJobs.NOT_ACCEPTING_JOBS);
    } else if (acceptingJobs == 1) {
        attributes.add(PrinterIsAcceptingJobs.ACCEPTING_JOBS);
    }
    
    int jobCount = getQueuedJobCount(serviceName);
    if (jobCount >= 0) {
        attributes.add(new QueuedJobCount(jobCount));
    }
    return attributes;
}
 

import javax.print.attribute.standard.PrinterLocation; //导入依赖的package包/类
public void testHashPrintServiceAttributeSet() {
    startTest("HashPrintJobAttributeSet class testing...");

    PrintServiceAttributeSet set1 = new HashPrintServiceAttributeSet();
    PrintServiceAttributeSet set2 = new HashPrintServiceAttributeSet(
            ColorSupported.SUPPORTED);
    PrintServiceAttributeSet set3 = new HashPrintServiceAttributeSet(set2);
    PrinterLocation location = new PrinterLocation("room 222", Locale.ENGLISH);
    PrintServiceAttribute [] arr = { location, 
                                     ColorSupported.SUPPORTED };
    PrintServiceAttributeSet set4 = new HashPrintServiceAttributeSet(arr);
    
    assertTrue(set1.isEmpty());
    assertFalse(set2.isEmpty());
    assertTrue(set3.equals(set2));
    assertFalse(set3.equals(set1));
    set3.clear();
    assertEquals(set3, set1);
    set3.add(ColorSupported.SUPPORTED);
    set3.add(location);
    assertTrue(set3.containsKey(location.getClass()));
    assertFalse(set2.containsKey(MediaName.NA_LETTER_WHITE.getClass()));
    assertTrue(set4.equals(set3));
    assertEquals(set3.get(location.getClass()), location);
    set1.addAll(set3);
    assertEquals(set3, set1);
    set1.remove(location.getClass());
    assertEquals(set1.size(), 1);
}