java SimpleDateFormat with gcj (gnu compiler for java)

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ASKER

Here is important portion of the ode. (I use cygwin's gcj. and gcc/gcj version
is 4.3.4.

import java.net.*;
import java.io.*;
import java.util.*;
import java.text.*;
import java.lang.*;
public class z33 {
public static void main(String[] args) throws IOException {
.....
String currentDate = getCurrentDate();
.......
}
private static String getCurrentDate() {
Date present_time = new Date();
SimpleDateFormat showTime = new SimpleDateFormat("MMddyyyy");
return showTime.format(present_time);
} //function getCurrentDate
}

SOLUTION

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ASKER

Yes, I did have some places with BufferedReader.readLine. However, it might not be related because
1. When I hardcoded getCurrentDate to return a date like 09132010, gcj worked OK.
2. When I tried to avoid SimpleDateFormat by using other function (see TestDate.java),
I still get similar error, but I did not have BufferedReader.readLine in the code.

PC@PC_Laptop /cygdrive/c/test_gcj
$ cat TestDate.java
import java.util.*;
import java.text.*;

public class TestDate {
/*
public static final int FULL;
public static final int LONG;
public static final int MEDIUM;
public static final int SHORT;
*/
public static void main (String args[]) {
System.out.println("Test for Date");
Date date1 = new Date();
String DateString = date1.toString();
System.out.println("Date:"+ DateString);

Date today = new Date();
DateFormat fmt;
fmt = DateFormat.getDateTimeInstance(1, 1, Locale.US);
String formatted = fmt.format(today);
System.out.println("today:"+ formatted);
System.out.println();

fmt = DateFormat.getDateTimeInstance(1, 1, Locale.UK);
formatted = fmt.format(today);
System.out.println("today:"+ formatted);
System.out.println();

fmt = DateFormat.getDateTimeInstance(0, 1, Locale.UK);
formatted = fmt.format(today);
System.out.println("today:"+ formatted);
System.out.println();

fmt = DateFormat.getDateTimeInstance(2, 1, Locale.UK);
formatted = fmt.format(today);
System.out.println("today:"+ formatted);
System.out.println();

fmt = DateFormat.getDateTimeInstance(3, 1, Locale.UK);
formatted = fmt.format(today);
System.out.println("today:"+ formatted);
System.out.println();
}
}

PC@PC_Laptop /cygdrive/c/test_gcj
$ !296
javac TestDate.java

PC@PC_Laptop /cygdrive/c/test_gcj
$ !298
gcj --main=TestDate -o TestDate.exe TestDate.class

PC@PC_Laptop /cygdrive/c/test_gcj
$ ls -l *.exe
-rwxr-xr-x+ 1 PC None 37359 2010-09-13 10:07 TestDate.exe
-rwxr-xr-x+ 1 PC None 30625 2010-09-10 15:35 snippetCalendar.exe

PC@PC_Laptop /cygdrive/c/test_gcj
$ !301
./TestDate
Test for Date
Date:Mon Sep 13 10:08:14 GMT-07:00 2010
Exception in thread "main" java.lang.ExceptionInInitializerError
at java.lang.Class.initializeClass(Unknown Source)
at java.util.Currency.getInstance(Unknown Source)
at java.text.DecimalFormatSymbols.<init>(Unknown Source)
at java.text.DecimalFormatSymbols.getInstance(Unknown Source)
at java.text.NumberFormat.computeInstance(Unknown Source)
at java.text.NumberFormat.getNumberInstance(Unknown Source)
at java.text.SimpleDateFormat.<init>(Unknown Source)
at java.text.DateFormat.computeInstance(Unknown Source)
at java.text.DateFormat.getDateTimeInstance(Unknown Source)
at TestDate.main(Unknown Source)
Caused by: java.lang.NullPointerException
at java.io.InputStreamReader.read(Unknown Source)
at java.io.BufferedReader.fill(Unknown Source)
at java.io.BufferedReader.readLine(Unknown Source)
at java.util.Properties.load(Unknown Source)
at java.util.Currency.<clinit>(Unknown Source)
at java.lang.Class.initializeClass(Unknown Source)
...9 more

PC@PC_Laptop /cygdrive/c/test_gcj

ASKER CERTIFIED SOLUTION

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ASKER

The code did not compile with Locale.getCurrent() and Locales.getCurrent().
Please see error message below.

Thx.

PC@PC_Laptop /cygdrive/c/test_gcj
$ !jav
javac TestDate2.java
TestDate2.java:22: cannot resolve symbol
symbol : variable Locales
location: class TestDate2
fmt = DateFormat.getDateTimeInstance(1, 1, Locales.getCurrent());
^
1 error

PC@PC_Laptop /cygdrive/c/test_gcj
$ !vi
vi TestDate2.java

PC@PC_Laptop /cygdrive/c/test_gcj
$ !ja
javac TestDate2.java
TestDate2.java:22: cannot resolve symbol
symbol : method getCurrent ()
location: class java.util.Locale
fmt = DateFormat.getDateTimeInstance(1, 1, Locale.getCurrent());
^
1 error

Ohh, sorry, i meant
Locale.getDefault()

ASKER

Similar (if not identical) error with SimpleDateFormat appearing.
Notiece that I did not use SimpleDateFormat in java code.

Thx.

Reggie

PC@PC_Laptop /cygdrive/c/test_gcj
$ !jav
javac TestDate2.java

PC@PC_Laptop /cygdrive/c/test_gcj

PC@PC_Laptop /cygdrive/c/test_gcj
$ gcj --main=TestDate2 -o TestDate2.exe TestDate2.class

PC@PC_Laptop /cygdrive/c/test_gcj
$ ./TestDate2
Test for Date
Date:Mon Sep 13 12:43:08 GMT-07:00 2010
Exception in thread "main" java.lang.ExceptionInInitializerError
at java.lang.Class.initializeClass(Unknown Source)
at java.util.Currency.getInstance(Unknown Source)
at java.text.DecimalFormatSymbols.<init>(Unknown Source)
at java.text.DecimalFormatSymbols.getInstance(Unknown Source)
at java.text.NumberFormat.computeInstance(Unknown Source)
at java.text.NumberFormat.getNumberInstance(Unknown Source)
at java.text.SimpleDateFormat.<init>(Unknown Source)
at java.text.DateFormat.computeInstance(Unknown Source)
at java.text.DateFormat.getDateTimeInstance(Unknown Source)
at TestDate2.main(Unknown Source)
Caused by: java.lang.NullPointerException
at java.io.InputStreamReader.read(Unknown Source)
at java.io.BufferedReader.fill(Unknown Source)
at java.io.BufferedReader.readLine(Unknown Source)
at java.util.Properties.load(Unknown Source)
at java.util.Currency.<clinit>(Unknown Source)
at java.lang.Class.initializeClass(Unknown Source)
...9 more

PC@PC_Laptop /cygdrive/c/test_gcj
$ cat TestDate2.java
import java.util.*;
import java.text.*;
public class TestDate2 {
public static void main (String args[]) {
System.out.println("Test for Date");
Date date1 = new Date();
String DateString = date1.toString();
System.out.println("Date:"+ DateString);

Date today = new Date();
DateFormat fmt;
fmt = DateFormat.getDateTimeInstance(1, 1, Locale.getDefault());

SOLUTION

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