I am a java beginner Output not coming y frnds

Question

//Methods with arguments

class A
{
int x;
void add(int y)
{
this.x=y;
System.out.println(" X : "+x);
}
}

class Demo2
{
public static void main(String aa[])
{
A.o1=new A();
o1.add(75);
}
}

Answer 1

this is the correct code . read it and understand it.

//Methods with arguments

class A
{
int x;
int add(int y)
{
this.x=y;
System.out.println("X:"+x);
return y;
}
}

class Demo2
{
public static void main(String arg[])
{
A o1=new A();
o1.add(75);
}
}

Answer 2

A o1 = new A();

Remove the "." between A and o1.

Answer 3

U can use System.out.print() To input too

Answer 4

thank u g

Answer 5

help me to learn Java max