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if statement - Check if a variable is between two numbers with Java

I have a problem with this code:

if (90 >>= angle =<< 180)

The error explanation is:

The left-hand side of an assignment must be a variable.

I understand what this means but how do I turn the above code into correct code?

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I see some errors in your code.
Your probably meant the mathematical term

90 <= angle <= 180, meaning angle in range 90-180.

if (angle >= 90 && angle <= 180) {

// do action
}

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