Answers for "in javaWhich of the following are acceptable values to pass to Font.font()"

Which of the method calls and field accesses (shown in underlined bold) in UseSample.java and Sample.java are legal in Java?

public class UseSample {
    public static void main(String [] args) {
        Sample s1 = new Sample(1, 2);
        Sample s2 = new Sample(3, 4);                
        Sample.ourData = Sample.method1(s2) * s2.method3(s1);
                
        s1.myData = this.ourData + counter;
                
        s2.myInfo = s1.method2(s1) * s2.ourData;
                
        Sample.counter += Sample.method4(s1) + 7;
    }
}