ADDITIONAL SYSTEM INFORMATION :
1.8.0_242-b08
11.0.6+10
13.0.2+8

A DESCRIPTION OF THE PROBLEM :
Using ternary operator cause unnecessary unboxing comparing to regular if-else

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
public class Reboxing {

    public static Integer getIntegerReboxing(Number number) {
        return number instanceof Integer ? (Integer) number : number.intValue();
    }

    public static Integer getInteger(Number number) {
        if (number instanceof Integer) {
            return (Integer) number;
        } else {
            return number.intValue();
        }
    }

    public static void main(String[] args) {
        System.out.println(getIntegerReboxing(Integer.valueOf(1)));
        System.out.println(getInteger(Integer.valueOf(1)));
    }
}


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
ternary operator should return Integer object as is and apply Integer.valueOf only for second case
ACTUAL -
JD-GUI:

public class Reboxing
{
  public static Integer getIntegerReboxing(Number number) { return Integer.valueOf((number instanceof Integer) ? ((Integer)number).intValue() : number.intValue()); }

  
  public static Integer getInteger(Number number) {
    if (number instanceof Integer) {
      return (Integer)number;
    }
    return Integer.valueOf(number.intValue());
  }

  
  public static void main(String[] args) {
    System.out.println(getIntegerReboxing(Integer.valueOf(1)));
    System.out.println(getInteger(Integer.valueOf(1)));
  }
}

CUSTOMER SUBMITTED WORKAROUND :
manual boxing:
... : Integer.valueOf(number.intValue());

FREQUENCY : always