Mega Code Archive
Java Varargs Tester
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/*
License for Java 1.5 'Tiger': A Developer's Notebook
(O'Reilly) example package
Java 1.5 'Tiger': A Developer's Notebook (O'Reilly)
by Brett McLaughlin and David Flanagan.
ISBN: 0-596-00738-8
You can use the examples and the source code any way you want, but
please include a reference to where it comes from if you use it in
your own products or services. Also note that this software is
provided by the author "as is", with no expressed or implied warranties.
In no event shall the author be liable for any direct or indirect
damages arising in any way out of the use of this software.
*/
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();
}
}
}
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