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Code Block

bgColor	#ccccff

class UnmodifiableDateView extends Date {
  private Date date;

  public UnmodifiableDateView(Date date) {
    this.date = date;
  }

  public void setTime(long date) {
    throw new UnsupportedOperationException();
  }

  // Override all other mutator methods to throw UnsupportedOperationException
}

public final class MutableClass {
  private Date date;

  public MutableClass(Date d) {
    this.date = d;
  }

  public void setDate(Date d) {
    this.date = (Date) d.clone();
  }

  public UnmodifiableDateView getDate() {
    return new UnmodifiableDateView(date);
  }
}

Exceptions

OBJ04-EX1EX0: Sensitive classes should not be cloneable, per rule "OBJ03-J. Sensitive classes must not let themselves be copied."

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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="5a5b5218ea1ddf79-c4826dba-4db54e8a-b2708290-85e58ef265a8c90b234f437e"><ac:plain-text-body><![CDATA[

[[MITRE 2009

AA. Bibliography#MITRE 09]]

[CWE-374

http://cwe.mitre.org/data/definitions/374.html] "Passing Mutable Objects to an Untrusted Method" and [CWE-375

http://cwe.mitre.org/data/definitions/375.html] "Returning a Mutable Object to an Untrusted Caller"

]]></ac:plain-text-body></ac:structured-macro>

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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="cf0d67711291e8bc-e47e2dc4-43494e3b-92799834-00f3425df8cb2b30368b11f6"><ac:plain-text-body><![CDATA[	[[API 2006	AA. Bibliography#API 06]]	[method clone()	http://java.sun.com/javase/6/docs/api/java/lang/Object.html#clone()]	]]></ac:plain-text-body></ac:structured-macro>
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="e6943506e9a3fd72-b0c201ca-476e47c3-98919be1-389375c092f8d7d7a5aff3b1"><ac:plain-text-body><![CDATA[	[[Bloch 2008	AA. Bibliography#Bloch 08]]	Item 39: Make defensive copies when needed and Item 11: Override clone judiciously	]]></ac:plain-text-body></ac:structured-macro>
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="e740b48a2c7b2925-72c0ac2c-461d4449-98598f5c-fa730ca9f124a272186424bd"><ac:plain-text-body><![CDATA[	[[SCG 2007	AA. Bibliography#SCG 07]]	Guideline 2-2 Support copy functionality for a mutable class	]]></ac:plain-text-body></ac:structured-macro>
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="794f060957801412-376964df-41984dcb-92b08fd0-13607c26fcf647d10780879b"><ac:plain-text-body><![CDATA[	[[SCG 2009	AA. Bibliography#SCG 09]]	Guideline 2-3 Support copy functionality for a mutable class	]]></ac:plain-text-body></ac:structured-macro>
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="93fd12fc365d229d-b16b5bf9-424048ef-8c338f6a-b6df6bada3f7c40ee79dbd0b"><ac:plain-text-body><![CDATA[	[[Security 2006	AA. Bibliography#Security 06]]	]]></ac:plain-text-body></ac:structured-macro>

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Exceptions