Replacing If Else unique conditional nested statements

Question

Switch case statements are good to replace nested if statements if we have the same condition but different criteria. But what is a good approach if those nested if statements all have different and unique conditions? Do I have any alternate options to replace a dozen if else statements nested inside each other?

Sample Code:

• Note: I know this is extremely unreadable - which is the whole point.
• Note: All conditions are unique.

...

if (condition) {
    // do A
} else {                       
    if (condition) {
        // do B
    if (condition) {
        if (condition) {
            if (condition) {
                // do C
                if (condition) {
                    // do D
                    if (condition) {
                        // do E
                    } else {                                                   
                        if (condition) {
                            // do F
                        }
                    }
                }
            }

            if (condition) {
                // do G
                if (condition) {
                    // do H
                    if (condition) {
                        // do I
                    } else {
                        // do J
                    }
                }
            }
        }
    }
}

​

Answer 1

The best approach in this case is to chop up the thing into appropriately named separate methods.