Use the object without static. Method calls a function in Java

Sir, as an object, call it in the "object. Method ()" way.
The main method in Java is static, used for the entry of the program, cannot be called in a static method, only static methods can be called. If you want to invoke a static method, you will be the object of the class, calling the non-static method through the object. such as:
public class Squareinttest {

public static void Main (string[] args) {
int result;
squareinttest m = new Squareinttest ();
for (int x = 1; x <= × x + +) {
result = (int) m.square (x);
The Math library also provides a way to calculate the square number
//result= (int) Math.pow (x,2);
System.out.println ("The square of" + x + "is" + result + "\ n");
}
}

A static method for calculating the square number of a custom
public int Square (int a)
{
return a*a;
}
}

Use the object without static. Method calls a function in Java