javac SimpleStats.java
SimpleStats.java:10: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("Enter your numbers.  Enter 0 to end.");
           ^
SimpleStats.java:11: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln();
           ^
SimpleStats.java:14: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
              TextIO.put("? ");
              ^
SimpleStats.java:15: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
              item = TextIO.getlnDouble();
                     ^
SimpleStats.java:20: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("\nStatistics about your calc:\n");
           ^
SimpleStats.java:21: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("   Count:              " + calc.getCount());
           ^
SimpleStats.java:22: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("   Sum:                " + calc.getSum());
           ^
SimpleStats.java:23: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("   Minimum:            " + calc.getMin());
           ^
SimpleStats.java:24: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("   Maximum:            " + calc.getMax());
           ^
SimpleStats.java:25: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("   Average:            " + calc.getMean());
           ^
SimpleStats.java:26: cannot find symbol
symbol  : variable TextIO
location: class SimpleStats
           TextIO.putln("   Standard Deviation: " + calc.getStandardDeviation());
           ^
11 errors