Java – Jasper Reports: multi line text field

jasper-reportsjava

I'm generating a pdf report with Jasper Reports 3.1.2. I have a multi line text field that contains several lines: this field is split over 2 consecutive pages.
The problem is that on AiX and Linux systems the last line in the first page is always missing (on Windows systems everything is fine). I've tried modifying margins, sizes and fonts but nothing happens: the last line of the first page is always missing

Any idea?

Thanks in advance

Best Answer

What font are you using? Problems like this are usually† caused by fonts not being available. Use font extensions to ensure that you know what font is being used, and then it should render well everywhere.

Also make sure to set this in jasperreports.properties:
net.sf.jasperreports.awt.ignore.missing.font=false

That's great for testing since it catches missing fonts immediately.

†By "usually" I mean "so often that it's indistinguishable from always". But of course it's theoretically possible that there is some other source in this case.

Related Solutions

Java – Initialization of an ArrayList in one line

It would be simpler if you were to just declare it as a List - does it have to be an ArrayList?

List<String> places = Arrays.asList("Buenos Aires", "Córdoba", "La Plata");

Or if you have only one element:

List<String> places = Collections.singletonList("Buenos Aires");

This would mean that places is immutable (trying to change it will cause an UnsupportedOperationException exception to be thrown).

To make a mutable list that is a concrete ArrayList you can create an ArrayList from the immutable list:

ArrayList<String> places = new ArrayList<>(Arrays.asList("Buenos Aires", "Córdoba", "La Plata"));

Java – How to read a large text file line by line using Java

A common pattern is to use

try (BufferedReader br = new BufferedReader(new FileReader(file))) {
    String line;
    while ((line = br.readLine()) != null) {
       // process the line.
    }
}

You can read the data faster if you assume there is no character encoding. e.g. ASCII-7 but it won't make much difference. It is highly likely that what you do with the data will take much longer.

EDIT: A less common pattern to use which avoids the scope of line leaking.

try(BufferedReader br = new BufferedReader(new FileReader(file))) {
    for(String line; (line = br.readLine()) != null; ) {
        // process the line.
    }
    // line is not visible here.
}

UPDATE: In Java 8 you can do

try (Stream<String> stream = Files.lines(Paths.get(fileName))) {
        stream.forEach(System.out::println);
}

NOTE: You have to place the Stream in a try-with-resource block to ensure the #close method is called on it, otherwise the underlying file handle is never closed until GC does it much later.

Best Answer

Related Solutions

Java – Initialization of an ArrayList in one line

Java – How to read a large text file line by line using Java

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