Java - Day 55 (in Telugu) - Returning Objects (references) from a method

/* ObjectReturn3.java
Returing references from a method
*/
class ObjectReturn3{
public static void main(String[] input){
Marks m1 = new Marks(100,90,80);
Marks m2 = new Marks(70,60,50);
Marks m3 = new Marks(40,30,20);

Marks m4 = m1.bun(m2);
m4.print();
Marks m5 = m3.bun(m2);
m5.print();

}
}
class Marks{
int mat,phy,che;
Marks(int m, int p, int c){
mat = m;
phy = p;
che = c;
}
Marks bun(Marks arg){
int x = this.sum(); // 90
int y = arg.sum(); // 180
if(x﹥y)
return this;
else
return arg;
}

// run() receives two Marks objects and returns a Marks object// run() receives two Marks references and returns a Marks reference// run() receives two Marks and returns Marks
Marks run(Marks p, Marks q){
int x = p.sum();
int y = q.sum();
if(x﹥y)
return p;
else
return q;
}

// fun() is a method that receives two Marks references and returns an int value
int fun(Marks p, Marks q){
int x = p.sum(); // 90
int y = q.sum(); // 270
if(x﹥y)
return x;
else
return y;
}

// sum() receives nothing from outside and return an int
int sum(){
int s = mat + phy + che;
return s;
}

// average() receives nothing returns a double
double average(){
int s = sum();
double a = s/3.0;
return a;
}

// print() receives nothing and returns nothing
void print(){
System.out.println("Mat:"+mat+", Phy:"+phy+", Che:"+che);
}

// getData() receives nothing and returns a String
String getData(){
String s = "Marks:"+mat+","+phy+","+che;
return s;
}
}