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How to convert timestamp string to datetime object in Python?

How do I convert timestamp string to datetime object in Python?
Rajendra Dharmkar
Answered on 8th Jan, 2018

You can use the fromtimestamp function from the datetime module to get a date from a UNIX timestamp. This function takes the timestamp as input and returns the datetime object corresponding to the timestamp. For exmaple, import datetime timestamp = datetime.datetime.fromtimestamp(1500000000) print(timestamp.strftime('%Y-%m-%d %H:%M:%S'))This will give the output:2017-07-14 08:10:00 Read More

What are anonymous inner classes in Java?

What are anonymous inner classes in Java?
radhakrishna
Answered on 2nd Jan, 2018

An inner class declared without a class name is known as an anonymous inner class.we declare and instantiate them at the same time.In general, they are used whenever you need to override the method of a class or an interface.ExampleLive Demoabstract class AnonymousInner {    public abstract void myMethod(); } ... Read More

What are inner classes in Java?

What are inner classes in Java?
mkotla
Answered on 2nd Jan, 2018

Java allows writing classes within classes and the class which is written inside another is known as inner class.Inner classes are a kind of security mechanism in Java.You can declare an inner class private once you do it cannot be accessed from an object outside the class.Java supports three kinds ... Read More

What are final classes in Java?

What are final classes in Java?
Sreemaha
Answered on 2nd Jan, 2018

If a class is declared final, you cannot inherit it. If you try it gives you a compile-time error as:

What is the equivalent of C# namespace in Java?

What is the equivalent of C# namespace in Java?
usharani
Answered on 2nd Jan, 2018

Packages are similar to namespaces in C#.

What are all the ways an object can be created in Java?

What are all the ways an object can be created in Java?
varun
Answered on 2nd Jan, 2018

You can create an objectUsing new keyword.Sample obj = new Sample();Using the newInstance() method and Class.forName() method.Sample obj2 = (Sample) Class.forName("Sample").newInstance();Using the clone() method by implementing Cloneable Interface (marker).Sample obj3 = (Sample) obj1.clone();Using class loader.Object obj4 = Sample.class.getClassLoader().loadClass("Sample");Using the constructor class from lang.reflect.Class cls = Sample.class; Constructor obj = cls.getDeclaredConstructors()[0]; ... Read More

How to create an object from class?

How to create an object from class?
Prabhas
Answered on 2nd Jan, 2018

An object is created from a class using the new keyword. There are three steps when creating an object from a class −Declaration − A variable declaration with a variable name with an object type.Instantiation − The 'new' keyword is used to create the object.Initialization − The 'new' keyword is ... Read More

What is the keyword used in instantiating a class in Java?

What is the keyword used in instantiating a class in Java?
seetha
Answered on 2nd Jan, 2018

In Java, the new keyword is used to instantiate a class.

How to measure elapsed time in python?

How do I measure elapsed time in python?
Rajendra Dharmkar
Answered on 8th Jan, 2018

To measure time elapsed during program's execution, either use time.clock() or time.time() functions. The python docs state that this function should be used for benchmarking purposes. For example, import time t0= time.clock() print("Hello") t1 = time.clock() - t0 print("Time elapsed: ", t1 - t0) # CPU seconds elapsed (floating point)This ... Read More

How to compare Python string formatting: % with .format?

How do I compare Python string formatting: % with .format?
Rajendra Dharmkar
Answered on 8th Jan, 2018

% can either take a variable or a tuple. So you'd have to be very explicit about what you want it to do. For example, if you try formatting such that:my_tuple = (1, 2, 3) "My tuple: %s" % my_tuple You'd expect it to give the output: My tuple: (1, ... Read More

How to get the timing Execution Speed of Python Code?

How do I get the timing Execution Speed of Python Code?
Rajendra Dharmkar
Answered on 8th Jan, 2018

To measure time of a program's execution, either use time.clock() or time.time() functions. The python docs state that this function should be used for benchmarking purposes. For example, import time t0= time.clock() print("Hello") t1 = time.clock() - t0 print("Time elapsed: ", t1 - t0) # CPU seconds elapsed (floating point)This ... Read More

Can a constructor be made final in Java?

Can a constructor be made final in Java?
vanithasree
Answered on 2nd Jan, 2018

No, a constructor can’t be made final.

Is constructor inherited in Java?

Is constructor inherited in Java?
radhakrishna
Answered on 2nd Jan, 2018

No, constructors are not inherited in Java.

How to find if 24 hrs have passed between datetimes in Python?

How do I find if 24 hrs have passed between datetimes in Python?
Rajendra Dharmkar
Answered on 8th Jan, 2018

To find out if 24 hrs have passed between datetimes in Python, you will need to do some date math in Python. So if you have 2 datetime objects, you'll have to subtract them and then take the timedelta object you get as a result and use if for comparision. ... Read More

How do I get time of a Python program's execution?

How do I get time of a Python program's execution?
Rajendra Dharmkar
Answered on 8th Jan, 2018

To measure time time of a program's execution, either use time.clock() or time.time() functions. The python docs state that this function should be used for benchmarking purposes. For example, import time t0= time.clock() print("Hello") t1 = time.clock() - t0 print("Time elapsed: ", t1 - t0) # CPU seconds elapsed (floating ... Read More

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