Java Reference
In-Depth Information
Try It Out - Outputting Data in Fixed Fields
Let's create a simple example that exercises our
FormatWriter
class by outputting integers, floating
point values and strings:
import java.io.*;
public class TestFormattedWriter {
public static void main(String[] args) {
// Some arbitrary data to output
int[] numbers = {
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377
};
double[] values = {
1.0, 1.0, 1.414, 1.732, 2.236, 2.828, 3.606, 4.582, 5.831,
-123456789.23456
};
String[] strings = {
"one", "one", "two", "three", "five", "eight", "thirteen"
};
// Create a formatted writer for a buffered output to the command line
FormattedWriter out = new FormattedWriter(
new BufferedWriter(
new OutputStreamWriter(System.out)), 12,
FormattedWriter.RIGHT
_
JUSTIFIED);
for (int i = 0; i < numbers.length; i++) {
if (i % 6 == 0) { // New line before each line of five values
out.println();
}
out.print(numbers[i]);
}
out.setWidth(10);
for (int i = 0; i < values.length; i++) {
if (i % 5 == 0) { // New line before each line of four values
out.println();
}
out.print(values[i]);
}
for (int i = 0; i < strings.length; i++) {
if (i % 4 == 0) { // New line before each line of three
out.println();
}
//out.print(strings[i], 14); // Override width
