package com.oreilly.tiger.ch05;
import java.io.IOException;
import java.io.PrintStream;
import java.util.LinkedList;
import java.util.List;
public class VarargsTester {
public VarargsTester() {
}
private int[] getListOfNumbers() {
int[] numbers = new int[] {0, 2, 4, 6, 8, 10, 9, 7, 5, 3, 1};
return numbers;
}
private String print(Object... values) {
StringBuilder sb = new StringBuilder();
for (Object o : values) {
sb.append(o.toString())
.append(" ");
}
return sb.toString();
}
public void testMaxMethod(PrintStream out) throws IOException {
int[] numbers = getListOfNumbers();
int max = MathUtils.max(numbers);
out.println("Max of list is: " + max);
}
public void testPrintMethod(PrintStream out) throws IOException {
out.println(print("foo", 23, -12, 1.23, getListOfNumbers()));
}
public void testArrayArgs(PrintStream out) throws IOException {
Object[] obj = new String[] {"Hello", "to", "all", "of", "you"};
out.printf("%s\n", obj);
out.printf("%s\n", (Object)obj);
}
public static void main(String[] args) {
try {
VarargsTester tester = new VarargsTester();
tester.testMaxMethod(System.out);
tester.testPrintMethod(System.out);
tester.testArrayArgs(System.out);
} catch (IOException e) {
e.printStackTrace();
}
}
} |