Summary of J2SE Foundation-construction method

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You can have multiple methods in a class that share the same name, as long as they have different parameters

parameter types differ in number of parameters

Package com.java2006;

Public class computer {

//Here static is the function of the method, in test can directly class name. Method access is not accessible by means of the new object

public static   int  sum ( int  a, int  b) {

return a+b;

}

public static   double  sum ( double  a, double  b) {

return a+b;

}

This defines a non-static method that is accessed through the new object

public int  add ( int  a, int  b, int  c) {

return A+b+c;

}

}

Define a test class

Package com.java2006;

Public class test1 {

Public static void main (string[] args) {

Here

int sum =computer. sum (1, 3);

System. out . Print (sum);

Double sum1=computer. sum (3.1, 5.4);

System. out . Print (SUM1);

Computer sum2= New computer ();

int aa=sum2.add (1, 2, 3);

System. out . Print (the value of "AA "+aa);

}

}

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Summary of J2SE Foundation-construction method