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  1. ,
    via by Unknown author

    An easy way to solve OutOfMemoryError in java is to increase the maximum heap size by using JVM options -Xmx512M, this will immediately solve your OutOfMemoryError.

  2. ,
    via Stack Overflow by Eugene Yokota

    In Eclipse : go to Run --> Run Configurations --> then select the project under maven build --> then select the tab "JRE" --> then enter -Xmx1024m.

    This should increase the memory heap for all the builds/projects. The above memory size is 1 GB.

java.lang.OutOfMemoryError: Java heap space	at java.util.Arrays.copyOf(	at java.lang.AbstractStringBuilder.expandCapacity(	at java.lang.AbstractStringBuilder.ensureCapacityInternal(	at java.lang.AbstractStringBuilder.append(	at java.lang.StringBuilder.append(	at nl.inl.blacklab.externalstorage.ContentStoreDirUtf8.addToBlock(	at nl.inl.blacklab.externalstorage.ContentStoreDirUtf8.storePart(	at nl.inl.blacklab.index.DocIndexerAbstract.storePartCapturedContent(	at nl.inl.blacklab.index.DocIndexerAbstract.appendContent(	at nl.inl.blacklab.index.DocIndexerAbstract.processContent(	at nl.inl.blacklab.index.DocIndexerXmlHandlers.endElement(	at nl.inl.blacklab.index.DocIndexerXmlHandlers$SaxParseHandler.endElement(	at	at	at$	at	at	at	at	at	at	at	at$JAXPSAXParser.parse(	at	at nl.inl.blacklab.index.DocIndexerXmlHandlers.index(	at nl.inl.blacklab.index.Indexer.index(	at nl.inl.blacklab.index.Indexer.indexInputStream(	at nl.inl.blacklab.index.Indexer.indexInternal(	at nl.inl.blacklab.index.Indexer.index(	at