Details
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Sub-task
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Resolution: Fixed
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P4
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7, 8
Description
In JLS 3.8. (Identifiers) change:
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The "Java letters" include uppercase and lowercase ASCII Latin letters A-Z (\u0041-\u005a), and a-z (\u0061-\u007a), and, for historical reasons, the ASCII underscore (_, or \u005f) and dollar sign ($, or \u0024). The $ sign should be used only in mechanically generated source code or, rarely, to access pre-existing names on legacy systems.
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to:
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The "Java letters" include uppercase and lowercase ASCII Latin letters A-Z (\u0041-\u005a), and a-z (\u0061-\u007a), and, for historical reasons, the ASCII underscore (_, or \u005f) and dollar sign ($, or \u0024). As of Java SE 9 the underscore is no longer allowed as a one-character identifier. The $ sign should be used only in mechanically generated source code or, rarely, to access pre-existing names on legacy systems.
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In JLS 3.9. (Keywords) add:
_
to the list of keywords
In JLS 15.27.1. (Lambda Parameters) remove:
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It is a compile-time error if a lambda parameter has the name _ (that is, a single underscore character).
The use of the variable name _ in any context is discouraged. Future versions of the Java programming language may reserve this name as a keyword and/or give it special semantics.
---
---
The "Java letters" include uppercase and lowercase ASCII Latin letters A-Z (\u0041-\u005a), and a-z (\u0061-\u007a), and, for historical reasons, the ASCII underscore (_, or \u005f) and dollar sign ($, or \u0024). The $ sign should be used only in mechanically generated source code or, rarely, to access pre-existing names on legacy systems.
---
to:
---
The "Java letters" include uppercase and lowercase ASCII Latin letters A-Z (\u0041-\u005a), and a-z (\u0061-\u007a), and, for historical reasons, the ASCII underscore (_, or \u005f) and dollar sign ($, or \u0024). As of Java SE 9 the underscore is no longer allowed as a one-character identifier. The $ sign should be used only in mechanically generated source code or, rarely, to access pre-existing names on legacy systems.
---
In JLS 3.9. (Keywords) add:
_
to the list of keywords
In JLS 15.27.1. (Lambda Parameters) remove:
---
It is a compile-time error if a lambda parameter has the name _ (that is, a single underscore character).
The use of the variable name _ in any context is discouraged. Future versions of the Java programming language may reserve this name as a keyword and/or give it special semantics.
---