Function overloading happens when a class has multiple methods with the same name. If we define a getData method twice in our class, we can say that the getData function is overloaded, as shown in the following code:
package coreJava;
//function overloading
public class childlevel extends childClassDemo {
public void getData(int a)
{
}
public void getData(String a)
{
}
public static void main(String[] args) {
childlevel cl=new childlevel();
cl.getData(2);
cl.getData("hello")
}
}There are a few rules that we need to remember while using multiple instances of a function with the same name. The first rule is that the number of arguments present in the function-overloaded method should be different, and the second is that the argument data type should be different. If we keep both the getData methods with the int a argument, it will throw an error, so we need to have a different number of arguments for each method...