Client Class Method Implementation

Consider the following Time class definition.

public class Time
{
    private int hrs;
    private int mins;
    private int secs;

    public Time()
    { /* implementation not shown */ }

    public Time(int h, int m, int s)
    { /* implementation not shown */ }

    /** Resets time to hrs = h, mins = m, secs = s. */
    public void resetTime(int h, int m, int s)
    { /* implementation not shown */ }

    /** Advances time by one second. */
    public void increment()
    { /* implementation not shown */ }

    /** Returns true if this time equals t, false otherwise. */
    public boolean equals(Time t)
    { /* implementation not shown */ }

    /** Returns true if this time is earlier than t, false otherwise. */
    public boolean lessThan(Time t)
    { /* implementation not shown */ }

    /** Returns a String with the time in the form hrs:mins:secs. */
    public String toString()
    { /* implementation not shown */ }
}

The following display method is part of a client class and is intended to print the time represented by its parameter t.

/** Outputs time t in the form hrs:mins:secs. */
public void display(Time t)
{
    /* method body */
}

Which of the following code segments, if used to replace /* method body */, will correctly implement the display method?

I.

Time T = new Time(h, m, s);
System.out.println(T);

II.

System.out.println(t.hrs + ":" + t.mins + ":" + t.secs);

III.

System.out.println(t);