Name: dfC67450 Date: 02/24/98



Javadoc is silent about output of java.text.MessageFormat.format(Object[] objs,
StringBuffer result, FieldPosition fp) in case of objs == null or
objs.length == 0 or objs[i] == null for some i.

Here is the test demonstrating the bug:

-----------------Test.java------------------------
import java.text.*;

public class Test {
    public static void main (String args[]){
        MessageFormat mf = new MessageFormat("<{0}>");
        Object[] objs1 = null;
        Object[] objs2 = {};
        Object[] objs3 = {null};
        System.out.println("pattern: \"" + mf.toPattern() + "\"");
        System.out.print("format(null) : ");
        System.out.println("\"" + mf.format(objs1) + "\"");
        System.out.print("format({}) : ");
        System.out.println("\"" + mf.format(objs2) + "\"");
        System.out.print("format({null}) :");
        System.out.println("\"" + mf.format(objs3) + "\"");
    }
}
 
---------Output from the test for 1.2-beta3 ---------------------
pattern: "<{0}>"
format(null) : "<{0}>"
format({}) : "<{0}>"
format({null}) :java.lang.NullPointerException
        at java.text.MessageFormat.format(MessageFormat.java:674)
        at java.text.MessageFormat.format(MessageFormat.java:453)
        at java.text.Format.format(Format.java:128)
        at Test.main(Test.java:15)
---------Output from the test for 1.1.6 ---------------------
pattern: "<{0}>"
format(null) : java.lang.NullPointerException
        at java.text.MessageFormat.format(MessageFormat.java)
        at java.text.MessageFormat.format(MessageFormat.java)
        at java.text.Format.format(Format.java)
        at Test.main(Test.java:11)
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