This will work, according to your current code :
System.out.println( "
" );
System.out.println("Please see below for suitable sport(s):");
boolean isAnyConditionTrue = false;
if ( age >= 18 && mVO2 >= 40 && mVO2 <= 60 && gender.equals("male") ){
System.out.println("Basketball");
isAnyConditionTrue = true;
}
if ( age >= 18 && mVO2 >= 43 && mVO2 <= 60 && gender.equals("female") ){
System.out.println("Basketball");
isAnyConditionTrue = true;
}
if ( age >= 18 && age <= 26 && mVO2 >= 62 && mVO2 <= 74 && gender.equals("male") ){
System.out.println("Bicycling");
isAnyConditionTrue = true;
}
if ( age >= 18 && age <= 26 && mVO2 >= 47 && mVO2 <= 57 && gender.equals("female") ){
System.out.println("Bicycling");
isAnyConditionTrue = true;
}
if ( age >= 18 && age <= 26 && mVO2 >= 55 && mVO2 <= 67 && gender.equals("male") ){
System.out.println("Canoeing");
isAnyConditionTrue = true;
}
if ( age >= 18 && age <= 26 && mVO2 >= 47 && mVO2 <= 67 && gender.equals("female") ){
System.out.println("Canoeing");
isAnyConditionTrue = true;
}
if ( age >= 18 && age <= 22 && mVO2 >= 52 && mVO2 <= 58 && gender.equals("male") ){
System.out.println("Gymnastics");
isAnyConditionTrue = true;
}
if ( age >= 18 && age <= 22 && mVO2 >= 36 && mVO2 <= 50 && gender.equals("female") ){
System.out.println("Gymnastics");
isAnyConditionTrue = true;
}
if ( age <= 25 && mVO2 >= 50 && mVO2 <= 70 && gender.equals("male") ){
System.out.println("Swimming");
isAnyConditionTrue = true;
}
if ( age <= 25 && mVO2 >= 40 && mVO2 <= 60 && gender.equals("female") ){
System.out.println("Swimming");
isAnyConditionTrue = true;
}
// THIS WILL BE FALSE IF IT DIDN'T GO INSIDE ANY BLOCK
if(!isAnyConditionTrue){
System.out.println("My apologies, we do not have a sport suitable for you.");
}
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