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Showing content from https://github.com/pmd/pmd/issues/2847 below:

Use Explicit Types · Issue #2847 · pmd/pmd · GitHub

Proposed Rule Name: UseExplicitTypes

Proposed Category: One of [Best Practices | Error Prone]

Description:

Java 10 introduced the var keyword. This reduces the amount of typing but decreases the reading comprehension of the code. Please create a rule that flags the use of the var keyword.

Code Sample:

The line with var index should be flagged as a problem.

public static void myMethod()
{
   var index = 0;
}

Here is the "correct" code.

public static void myMethod()
{
   int index = 0;
}

Possible Properties:

• localVariables: One of [allow | disallow]. Defaults to disallow.
• forLoopIndexes: One of [allow | disallow]. Defaults to disallow.
• tryWithResources: One of [allow | disallow]. Defaults to disallow.
• primitiveTypes: One of [allow | disallow]. Defaults to disallow. If true, then var can replace a primitive type as long as one of the above properties allows the location.

Are there any other places where var can be used? If so, add those as properties.

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