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  1. ,
    via oracle.com 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(Arrays.java:2367)	at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)	at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)	at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:535)	at java.lang.StringBuffer.append(StringBuffer.java:322)	at java.io.BufferedReader.readLine(BufferedReader.java:363)	at java.io.BufferedReader.readLine(BufferedReader.java:382)	at py4j.commands.AbstractCommand.getStringArguments(AbstractCommand.java:102)	at py4j.commands.AbstractCommand.getArguments(AbstractCommand.java:78)	at py4j.commands.CallCommand.execute(CallCommand.java:77)	at py4j.GatewayConnection.run(GatewayConnection.java:209)	at java.lang.Thread.run(Thread.java:745)