Answer Posted / vikneswarank

method signature means defind the method in diff signature
diff no arguments
diff datatype if arguments
diff sequence of arguments
for example

public class PolyOverload1
{
public int iEmpNo;
protected double dbSalary;
private boolean boolPermanent;
String strEmpName;

public PolyOverload1()
{
System.out.println("PolyOverload constructor");
iEmpNo = 1001;
strEmpName = "Base Employee";
dbSalary = 20000.500;
}

public void getEmpDetails()
{
// to print the employee details
System.out.println("Emp no : " + iEmpNo);
System.out.println("Emp name : " + strEmpName);
}

//no of arguments difference
public void getEmpDetails(int eno)
{
//to print the employee details
System.out.println("Emp no [getEmpDetails(int eno)]
: " + eno);
System.out.println("Emp name [getEmpDetails(int
eno)] : " + strEmpName);
}

//different type of data type
//note : return type can be different for overloading
public int getEmpDetails(String ename)
{
// to print the employee details
System.out.println("Emp no [getEmpDetails(String
ename)] : " + iEmpNo);
System.out.println("Emp name [getEmpDetails(String
ename)] : " + ename);
return iEmpNo;
}

//no of arguments difference
public void getEmpDetails(int eno, String ename)
{
// to print the employee details
System.out.println("Emp no [getEmpDetails(int eno,
String ename)] : " + eno);
System.out.println("Emp name [getEmpDetails(int eno,
String ename)] : " + ename);
}

//different seguence type of data type
public void getEmpDetails(String ename, int eno)
{
// to print the employee details
System.out.println("Emp no [getEmpDetails(String
ename, String eno)] : " + eno);
System.out.println("Emp name [getEmpDetails(String
ename, String eno)] : " + ename);
}

public static void main (String arg[])
{
//Object creation
PolyOverload1 polyObj = new PolyOverload1();
//static binding or early binding...during compile
time JVM will find that the method's reference to call
polyObj.getEmpDetails();
polyObj.getEmpDetails(1002);
polyObj.getEmpDetails("Test Employee1");
polyObj.getEmpDetails(1003, "Test Employee2");
polyObj.getEmpDetails("Test Employee3", 1004);
}
}

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