フィールド変数がprivateで直接参照できないときに返すメソッド

{
private int hour, minute, second;
public void setTime(int h, int m, int s)
{
if(h>=24)
h = 23;
if(h<0)
h = 0;
if(m>=60)
m = 59;
if(m<0)
m = 0;
if(s>=60)
s = 59;
if(s<0)
s = 0;

hour = h;
minute = m;
second = s;
}
public String getTime()
{
String h, m, s;
if(hour<10)
h = "0" + hour;
else
h = "" + hour;
if(minute<10)
m = "0" + minute;
else
m = "" + minute;
if(second<10)

s = "0" + second;
else
s = "" + second;
return h + ":" + m + ":" + s;
}
public void increaseOneSecond()
{
second++;
if(second >= 60){
second = 0;
minute++;
}
if(minute >= 60){
minute = 0;
hour++;
}

if(hour >= 24){
hour = 0;
}
}
public void decreaseOneSecond()
{
second--;
if(second < 0){
second = 59;
minute--;
}
if(minute < 0){
minute = 59;
hour--;
}
if(hour < 0){

hour = 23;
}
}
public void increaseSecond(int n)
{
for(int i=1; i<=n; i++){
increaseOneSecond();
}
}
public void decreaseSecond(int n)
{
for(int i=1; i<=n; i++){
decreaseOneSecond();
}
}
public int getHour()

{
return hour;
}
public int getMinute()
{
return minute;
}
public int getSecond()
{
return second;
}
public int getTotalSeconds()
{
return hour*3600 + minute*60 + second;
}
public void addTime(MyTime a)

{
int seconds1 = getTotalSeconds();
int seconds2 = a.getTotalSeconds();
int totalSeconds = seconds1 + seconds2;
totalSeconds %= 86400;
hour = totalSeconds / 3600;
minute = (totalSeconds % 3600) / 60;
second = totalSeconds % 60;
}
}

public class ren11_2
{
public static void main(String[] args) throws IOException
{
BufferedReader br =
new BufferedReader( new InputStreamReader( System.in ) );
MyTime t1 = new MyTime();
MyTime t2 = new MyTime();
System.out.print("時刻１の「時」を入力 > ");
int h = Integer.parseInt( br.readLine() );
System.out.print("時刻１の「分」を入力 > ");
int m = Integer.parseInt( br.readLine() );
System.out.print("時刻１の「秒」を入力 > ");
int s = Integer.parseInt( br.readLine() );
t1.setTime(h, m, s);
System.out.println(t1.getTime() + "に設定されました");

System.out.println();
System.out.println("「時」の値は " + t1.getHour() + " です。");
System.out.println("「分」の値は " + t1.getMinute() + " です。");
System.out.println("「秒」の値は " + t1.getSecond() + " です。");
System.out.println("00:00:00からの総秒数は " + t1.getTotalSeconds() + " です。");
System.out.print("時刻２の「時」を入力 > ");
h = Integer.parseInt( br.readLine() );
System.out.print("時刻２の「分」を入力 > ");
m = Integer.parseInt( br.readLine() );
System.out.print("時刻２の「秒」を入力 > ");
s = Integer.parseInt( br.readLine() );
t2.setTime(h, m, s);
t1.addTime(t2);
System.out.println("時刻１に時刻２を加算した時刻は " + t1.getTime() + " です。");
}
}