Activity1.1 : Command line programming – Method Overloading
Program File : MethodOverload.java
Procedures : 1. Type the program file.
: 2. Save/Compile the program.
: 3. Using the Command Prompt (C:\>), execute the following:
Path = C:\jdk\bin (or look for the equivalent directory)
Javac MethodOverload.java (compiling the program)
: 4. Execute the program with test data.
Scenario1: Java MethodOverload 5
Output: The area is : 78.54
Scenario2: Java MethodOverload 5 3
Output: The area is : 12.5
Scenario3: Java MethodOverload
Output: error
Scenario4: Java MethodOverload 1 2 3
Output: error
public class MethodOverload
{ static double n1,n2,a;
static double area(double n1)
{ a = 3.1416 * n1*n1;
return a;
}
static double area(double n1, double n2)
{ a = 1/2.0 * n1*n1;
return a;
}
public static void main(String[] args)
{
if (args.length>2 || args.length<1)
System.out.println(“error”);
else
{
n1 = Double.parseDouble(args[0]);
if (args.length==1)
System.out.println(“The area is: “+ area(n1));
else
{
n2 = Double.parseDouble(args[1]);
System.out.println(“The area is: “+ area(n1,n2));
}
}
}
}
