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Editorial Team
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Asked: 2026-05-18T21:12:09+00:00

This may be a subjective question leading to deletion but I would really like

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This may be a subjective question leading to deletion but I would really like some feedback.

Recently, I moved to another very large enterprise project where I work as a developer. I was aghast to find most classes in the project are anywhere from 8K to 50K lines long with methods that are 1K to 8K lines long. It’s mostly business logic dealing with DB tables and data management, full of conditional statements to handle the use cases.

Are classes this large common in large enterprise systems? I realize without looking at the code it’s hard to make a determination, but have you ever worked on a system with classes this large?

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  1. Editorial Team

    Here are the ten largest class in the JDK 6 by line count of 7209 .java files. These classes include significant amount of comments which could be longer than the code.

    4495 ./javax/sql/rowset/BaseRowSet.java
4649 ./java/awt/Container.java
5025 ./javax/swing/text/JTextComponent.java
5246 ./java/util/regex/Pattern.java
5316 ./javax/swing/JTree.java
5469 ./java/lang/Character.java
5473 ./javax/swing/JComponent.java
9063 ./com/sun/corba/se/impl/logging/ORBUtilSystemException.java
9595 ./javax/swing/JTable.java
9982 ./java/awt/Component.java

    I would agree one printed page is long enough for a method. There really should not be a need for classes over 10K lines long IMHO.

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