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Why no if statement inside System.out.println?

 
Greenhorn
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Why exactly is it not allowed to have an if statement inside a print statement?

For example:

 
Saloon Keeper
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What you pass to a method is an expression. An if() statement is not an expression. However you can achieve the same effect with an expression that uses a ternary operator "?:". Example:
Note the parens around the conditional are technically not required but often used for clarity for the reader.
 
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