# Make SerialVersionUID Static Final
# Description
Adds the modifiers static and final to SerialVersionUid long variables when they are absent.
# Benefits
For serializable classes the SerialVersionUid should be written explicitly. If the UID changes, that can lead to errors (for example, an object not being able to be deserialized). To avoid those errors, apply this rule.
# Tags
# Code Changes
Pre
import java.io.Serializable;
public class TestSerialVersionUidRule {
private class Test01 implements Serializable {
/**
*
*/
private long serialVersionUID = 1L;
private long otherField;
private Object objectField;
}
private class Test02 implements Serializable {
/**
*
*/
private long testLong, serialVersionUID = 1L;
}
}
Post
import java.io.Serializable;
public class TestSerialVersionUidRule {
private class Test01 implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private long otherField;
private Object objectField;
}
private class Test02 implements Serializable {
private static final long serialVersionUID = 1L;
/**
*
*/
private long testLong;
}
}
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