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| View Revisions: Issue #37943 | [ Back to Issue ] | ||
| Summary | 0037943: JDK 9: remove [deprecation] newInstance() in Class warnings | ||
| Revision | 2018-02-26 13:52 by caristu | ||
| Description | When building Openbravo with JDK 9, several "[deprecation] newInstance() in Class" warnings appears: warning: [deprecation] newInstance() in Class has been deprecated Besides, it seems that is not a recommended practice to make use of this method. So, these warnings should be fixed by retrieving the instance from a constructor object. See [1] and [2]. This is a safe change as Class.newInstance() is more limited than Constructor.newInstance(): the first one can only invoke the zero-argument constructor, while the second one may invoke any constructor. So, in order to fix this issue we have just to: a) Replace calls to Class.newInstance() with Constructor.newInstance() without using any argument. b) Catch the new exception types that are thrown by Constructor.newInstance(): InvocationTargetException and NoSuchMethodException. Both of these exception types are subclasses of ReflectiveOperationException. [1] https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html [^] [2] https://docs.oracle.com/javase/tutorial/reflect/member/ctorInstance.html [^] |
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| Revision | 2018-02-26 13:51 by caristu | ||
| Description | When building Openbravo with JDK 9, several "[deprecation] newInstance() in Class" warnings appears: warning: [deprecation] newInstance() in Class has been deprecated Besides, it seems that is not a recommended practice to make use of this method. So, these warnings should be fixed by retrieving the instance from a constructor object. See [1] and [2]. This is a safe change as Class.newInstance() is more limited than Constructor.newInstance(): the first one can only invoke the zero-argument constructor, while the second one may invoke any constructor. So, in order to fix this issue we have just to: a) Invoke Constructor.newInstance() without any argument b) Catch the new exception types that are thrown by Constructor.newInstance(): InvocationTargetException and NoSuchMethodException. Both of these exception types are subclasses of ReflectiveOperationException. [1] https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html [^] [2] https://docs.oracle.com/javase/tutorial/reflect/member/ctorInstance.html [^] |
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| Revision | 2018-02-26 13:51 by caristu | ||
| Description | When building Openbravo with JDK 9, several "[deprecation] newInstance() in Class" warnings appears: warning: [deprecation] newInstance() in Class has been deprecated Besides, it seems that is not a recommended practice to make use of this method. So, these warnings should be fixed by retrieving the instance from a constructor object. See [1] and [2]. This is a safe change as Class.newInstance() is more limited than Constructor.newInstance(): the first one can only invoke the zero-argument constructor, while the second one may invoke any constructor. So, fix this issue we have just to: a) Invoke Constructor.newInstance() without any argument b) Catch the new exception types that are thrown by Constructor.newInstance(): InvocationTargetException and NoSuchMethodException. Both of these exception types are subclasses of ReflectiveOperationException. [1] https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html [^] [2] https://docs.oracle.com/javase/tutorial/reflect/member/ctorInstance.html [^] |
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| Revision | 2018-02-15 19:04 by caristu | ||
| Description | When building Openbravo with JDK 9, several "[deprecation] newInstance() in Class" warnings appears: warning: [deprecation] newInstance() in Class has been deprecated Besides, it seems that is not a recommended practice to make use of this method. So, these warnings should be fixed by retrieving the instance from a constructor object. See [1] and [2]. [1] https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html [^] [2] https://docs.oracle.com/javase/tutorial/reflect/member/ctorInstance.html [^] |
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| Revision | 2018-02-15 18:55 by caristu | ||
| Description | When building Openbravo with JDK 9, several "[deprecation] newInstance() in Class" warnings appears: warning: [deprecation] newInstance() in Class has been deprecated Besides, it seems that is not a recommended practice to make use of this method. So, these warnings should be fixed by retrieving the instance from a constructor object[1] [1] https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html [^] |
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