Question

Add two lines of code in main() function to create a variable, goodStudent, whose type is Student with name, "John" and age, 21.

public class Student {
   private String name;
   private int age;

   public Student(){
      name = "";
      age= 0;
   }

   public Student(String initName){
      name = initName;
      age = 0;
   }

   public String getName() {
      return name;
   }

   public void setAge(int anAge) {
       age = anAge;
   }

   public static void main (String[] args) {

        // !!!! Your two lines of code come here   !!!
    
   }
}

Answer 1

Program:

Explanation:

Line 26: Here creating object called goodStudent for class Student by passing string parameter  

Line 27: calling setAge() method using object goodStudent

Program:

public class Student {
private String name;
private int age;

public Student(){
name = "";
age= 0;
}

public Student(String initName){
name = initName;
age = 0;
System.out.println(name);
}

public String getName() {
return name;
}

public void setAge(int anAge) {
age = anAge;
System.out.println(age);
}

public static void main (String[] args) {
Student goodStudent=new Student("John");
goodStudent.setAge(21);
}
}

Output: