Answer / sandya

In 3 ways:
1.A Thread can enter the waiting state by invoking it's
sleep() method
2.By blocking on i/o by unsuccessfully attempting to
acquire an object's lock or by invoking an object's wait()
method.
3.It can also enter the waiting state by invoking it's
suspend() method.

Answer / anonymous

2 ways.
wait( time ---);
sleep();

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