Object-Oriend Programming using Java

1. CS3135/CS2135
Object Oriented Programming (Java)
BSCS-3 / MCS-3
Lecture # 16
Math
Timer

2. Math
java.lang.Math (no need to import)
• double cos(double)
• double sin(double)
• double tan(double)
• double log(double)
• double log10(double)
• int max(int, int)
• float max(float, float)
• int min(int, int)
• float min(float, float)
• double pow(double, double)
• double sqrt(double)
• int round(float)
• long round(double)
• double random() // >=0.0 and <1
• double random() * integer value // >=0 and < integer value
• double random() * (max - min) // >=min integer value and < max integer value
Instructor: Tanzila Kehkashan
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3. Instructor: Tanzila Kehkashan
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4. Timer In Java
java.util.Timer
• Timer()
• void schedule(TimerTask, Date) //Schedules specified task for execution at the specified time.
• void schedule(TimerTask, Date, long) //Schedules specified task for repeated fixed-delay execution,
beginning at the specified time. Long is time in milliseconds between successive task executions.
• void schedule(TimerTask, long) //Schedules the specified task beginning after the specified delay.
• void schedule(TimerTask, long, long) //Schedules the specified task for repeated fixed-delay execution,
beginning after the specified delay.
• void cancel() //Terminates this timer, discarding any currently scheduled tasks.
java.util.TimerTask
• TimerTask()
• void run() //The action to be performed by this timer task.
• boolean cancel() //Cancels this timer task.
Instructor: Tanzila Kehkashan
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5. Instructor: Tanzila Kehkashan
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6. Try It !
Instructor: Tanzila Kehkashan
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7. Instructor: Tanzila Kehkashan
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