Review

Calls a method on an object and later checks it for null.

Move null-check to before first call.

• misplaced/condition/null_check

mubench/examples/directives/LateNullCheck.java

misuse(Object)

class LateNullCheck {
	public void misuse(Object o) {
		o.hashCode();
		if (o == null) {
			o = new Object();
		}
	}

}

public class NullGuard {
	public void pattern(Object o) {
		if (o == null) {
			o = new Object();
		}
		o.hashCode();
	}
}