对象无法解析或不是字段

Question

I'm a newbie in java and while i'm doing coding for the sitting plan the counsole kept giving me errors Please help >.<

This is the class for SittingPlan

public SittingPlan()
{
    String[] name = {"charles" };
    String[] sex = {" Girl", "Boy"};
    Students[] names = new Students[NUMBER_OF_STUDENTS];
    currentStudents = 0;
    for ( int count = 0; count < names.length; count++ )
        names [ count ] = new Students ( name [count % 22 ], sex [ count / 22 ]);
}
public void shuffle()
{
    currentStudents = 0;
    SittingPlan.shuffle.setName();
    for ( int first = 0; first < names.length; first++ )
    { 
        int second = randomNumbers.nextInt ( NUMBER_OF_STUDENTS );
        Students temp = names[ first ];
        names[ first ] = names[ second ];
        names[ second ] = (Students) temp;
    }

}
public Students dealStudents()
{
    if ( currentStudents < names.length )
        return (Students) names[ currentStudents++ ];
    else
        return null;
}

and this is the stacktrace

Exception in thread "main" java.lang.Error: Unresolved compilation problem: shuffle cannot be resolved or is not a field

at SittingPlan.shuffle(SittingPlan.java:22)
at mainlaunch.main(mainlaunch.java:6)

Answer 1

This line is wrong:

SittingPlan.shuffle.setName();

shuffle() is a method, but it's not static . It returns void , so you can't call setName() on the return value.

I can't guess what you want. This code is confusing.

I think a better idea would be using Java collections, like this:

List<Student> classList = new ArrayList<Student>();
// populate with Student instances
Random random = new Random(seed);
Collections.shuffle(classList, random);