Limiting the object Types in a Variable Argument List : Varargs « Class Definition « Java Tutorial

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Java Tutorial » Class Definition » Varargs

5. 9. 4. Limiting the object Types in a Variable Argument List


public class MainClass {

  public static void main(String[] args) {

    System.out.println(average(1.0, 2.0, 3.0, 4.0, 5.0));

    System.out.println(average(3.14, 1.414, 1.732));

    System.out.println(average(new Double(7), new Double(8), new Double(9), new Double(10)));

  }

  // Average of a variable number of values

  public static double average(Double... args) {

    if (args.length == 0) {

      return 0.0;

    }

    double ave = 0.0;

    for (double value : args) {

      ave += value;

    }

    return ave / args.length;

  }

}

3.0
2.0953333333333335
8.5

5. 9. Varargs
	5. 9. 1.	Demonstrating variable-length arguments
	5. 9. 2.	Using varargs with standard arguments
	5. 9. 3.	Methods Accepting a Variable Number of objects
	5. 9. 4.	Limiting the object Types in a Variable Argument List
	5. 9. 5.	Demonstrate variable-length arguments.
	5. 9. 6.	Use varargs with standard arguments.
	5. 9. 7.	Overloading Vararg Methods
	5. 9. 8.	Make methods that have unspecified number of parameters:pass an array of Objects

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