Override

public class man {
    String name;
    int age;
    int weight;
    int gender; // 1 - male, 2 - female
 
    public man(String n, int a, int w, int g) {
        this.name = n;
        this.age = a;
        this.weight = w;
        this.gender = g;
    }
 
    public void PrintInfo() {
        System.out.print(this.name + " is " + this.age + " years old.");
        if (this.gender == 1) {
            System.out.println("He is a man and his weight is " + this.weight + "kilos.");
        }
        else
            System.out.println("She is a woman and her weight is " + this.weight + "kilos.");
    }
}

public class student extends man {
    private int yearsStudy;
 
    public student(String n, int a, int w, int g, int y) {
        super(n, a, w, g);
        this.yearsStudy = y;
    }
 
    public void ChangeYears(int yearsStudy) {
        this.yearsStudy = yearsStudy;
    }
 
    public void PrintYears() {
        System.out.println("Years of studing " + this.yearsStudy);
    }
 
    @Override
    public void PrintInfo() {
        System.out.print(this.name + " is " + this.age + " years old.");
        if (this.gender == 1) {
            System.out.println("He is a man and his weight is " + this.weight + "kilos.");
            System.out.print("He is a student with ");
            this.PrintYears();
        }
        else {
            System.out.println("She is a woman and her weight is " + this.weight + "kilos.");
            System.out.print("She is a student with ");
            this.PrintYears();
        }
    }
}

            System.out.print("He is a student with ");
            this.PrintYears();

            System.out.print("He is a student with " + this.PrintYears());