Lonzak created PDFBOX-4947:
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Summary: UnsupportedOperationException when using
FontMapperImpl.addSubstitute()
Key: PDFBOX-4947
URL: https://issues.apache.org/jira/browse/PDFBOX-4947
Project: PDFBox
Issue Type: Bug
Affects Versions: 2.0.21
Reporter: Lonzak
Fix For: 2.0.22
I tried to add an additional substitue mapping however it throws an exception:
{code:java}
java.lang.UnsupportedOperationException
at java.util.AbstractList.add(AbstractList.java:148)
at java.util.AbstractList.add(AbstractList.java:108)
at
org.apache.pdfbox.pdmodel.font.FontMapperImpl.addSubstitute(FontMapperImpl.java:210){code}
=> Thus the addSubstitute() method is useless
The reason is that for instantiating the mapping only a skeleton list from
"Arrays.asList()" is used. This list doesn't support many methods of List
interface and throws the exception.
+*Solution:*+
Replace the " Arrays.asList()" with the real list like new ArrayList() or the
like.
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