macOS Java to iPhone Syntax Differences

public class Bicycle {
	
    // the Bicycle class has three fields
    public int cadence;
    public int gear;
    public int speed;
	
    // the Bicycle class has one constructor
    public Bicycle(int startCadence, int startSpeed, int startGear) {
        gear = startGear;
        cadence = startCadence;
        speed = startSpeed;
    }
	
    // the Bicycle class has four methods
    public void setCadence(int newValue) {
        cadence = newValue;
    }
	
    public void setGear(int newValue) {
        gear = newValue;
    }
	
    public void applyBrake(int decrement) {
        speed -= decrement;
    }
	
    public void speedUp(int increment) {
        speed += increment;
    }
	
}

// file Bicycle.h
@interface Bicycle : NSObject {
	int cadence;
	int gear;
	int speed;
}

- (id)initWithCadence:(int)startCadence speed:(int)startSpeed gear:(int)startGear;

- (void)setCadence:(int)newValue;
- (void)setGear:(int)newValue;
- (void)applyBrake:(int)decrement;
- (void)speedUp:(int)increment;

@end


// file Bicycle.m
@implementation Bicycle

- (id)initWithCadence:(int)startCadence speed:(int)startSpeed gear:(int)startGear {
	if (self = [super init])  {
	    gear = startGear;
	    cadence = startCadence;
	    speed = startSpeed;		
	}
	
	return self;
}

- (void)setCadence:(int)newValue {
	cadence = newValue;
}

- (void)setGear:(int)newValue {
	gear = newValue;
}

- (void)applyBrake:(int)decrement {
	speed -= decrement;
}

- (void)speedUp:(int)increment {
	speed += increment;
}

@end

Bicycle *bike = [[Bicycle alloc] initWithCadence:10 speed:14 gear:3];
[bike applyBrake:8];
[bike release];