FULL PRODUCT VERSION :
java version "1.7.0_25"

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
Hello,

The following test case does not produce the same output twice contrarily to what the DecimalFormat javadoc says:

import java.text.DecimalFormat;

public class Test {

    public static void main(String[] args) throws Exception {
        String pattern1 = "#,##0.0#;(#)";
        String pattern2 = "#,##0.0#;(#,##0.0#)";
        DecimalFormat format1 = new DecimalFormat(pattern1);
        System.out.println(pattern1 + " -> " + format1.format(-1000));
        DecimalFormat format2 = new DecimalFormat(pattern2);
        System.out.println(pattern2 + " -> " + format2.format(-1000));
    }

}

Ouput is:

#,##0.0#;(#) -> (1,000.0
#,##0.0#;(#,##0.0#) -> (1,000.0)

Notice the missing closing parenthesis.

Best regards,

Thomas Leplus

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the following piece of code:

import java.text.DecimalFormat;

public class Test {

    public static void main(String[] args) throws Exception {
        String pattern1 = "#,##0.0#;(#)";
        String pattern2 = "#,##0.0#;(#,##0.0#)";
        DecimalFormat format1 = new DecimalFormat(pattern1);
        System.out.println(pattern1 + " -> " + format1.format(-1000));
        DecimalFormat format2 = new DecimalFormat(pattern2);
        System.out.println(pattern2 + " -> " + format2.format(-1000));
    }

}

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
#,##0.0#;(#) -> (1,000.0)
#,##0.0#;(#,##0.0#) -> (1,000.0)
ACTUAL -
#,##0.0#;(#) -> (1,000.0
#,##0.0#;(#,##0.0#) -> (1,000.0)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.text.DecimalFormat;

public class Test {

    public static void main(String[] args) throws Exception {
        String pattern1 = "#,##0.0#;(#)";
        String pattern2 = "#,##0.0#;(#,##0.0#)";
        DecimalFormat format1 = new DecimalFormat(pattern1);
        System.out.println(pattern1 + " -> " + format1.format(-1000));
        DecimalFormat format2 = new DecimalFormat(pattern2);
        System.out.println(pattern2 + " -> " + format2.format(-1000));
    }

}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Use the full pattern instead of (#).