What is Difference between Preemptive Scheduling and Time Slicing in Java

Preemptive Scheduling :
In Preemptive Scheduling , Highest Priority thread runs first until it enters into waiting states or dead states or higher priority tasks comes into picture.

Time Slicing:
In Time Slicing, Task executes for specific predefined slice of time and then enters into pool of read tasks. Then Scheduler decides which tasks should be executed next.