1. Write, compile and run a java program which does the pi computation. a) without synchronization Here a sample output:

b) with synchronized keyword c) with locks Here a sample output:

with screen shots Please

Output N> Debugger Console X | Test (run) P1 3.133582091558405 Number of threads is 4 Time with 31 milliseconds BUILD SUCCESSFUL (total t ime : 0 seconds) Output N> Debugger Console X | Test (run) P1 3.133582091558405 Number of threads is 4 Time with 31 milliseconds BUILD SUCCESSFUL (total t ime : 0 seconds)