Learn java programming-Java tutorials

Java has a bigger learning curve. It's a complete platform with a huge API and a lot of details. As you've reduced your scenario to Android, I suppose you could organize your studies this way:

• Understand the basics of packages, classes and methods. These 3 concepts by themselves have a lot of details and best practices;
• OOP (Object Oriented Programming) - This is an important aspect so you can write legible and maintainable code;
• Collections is an important aspect of the language you must learn.,
• Adopting Android, you'll have to understand a bit about inner classes and events. For example: to handle buttons actions;
• Start reading Android API
• For Android I believe 4 main concepts will give you a simplified overview: Activity, Intent, Services and Interface building.

Best Java Programming Tutorials

Official site:Java programming

• Firstly you should understand the concept of object-oriented-programming(OOP),
• A great car analogy:how-to-explain-oop-concepts-to-a-non-technical-person
• A more detailed version:Java Tutorial:Don't Fear the OOP

• Download and install:Java SE development kit(JDK)
• IDE:eclipse
• official java tutorial by oracle

Java Programming Tutorials:

Java courses

• Treehouse:Java basic course
• Udemy:java tutorials for begineer
• Udemy:Programming java for begineers

Java tutorials(free)

1. Youtube videos:Java tutorials
2. Eclipse and java video tutorials
3. learn java

Books for java programming

• Java: A Beginner's Guide, Sixth Edition
• Thinking in java
• Effective java
• After learning the basic and fundamental:Head first java
• Think java

If you want to create Android Apps

• Download Android Studio
• Official getting started guide
• Courses
• Udemy:learn android from scratch

More Useful java programming Resources:

Best online programming course available

• Treehouse(first month is free):Best for absolute beginners.
• Codeacademy - Awesome and free courses for beginner.
• Udemy - Huge list of online course. Some are excellent but remember to read the users review before taking any course.
• Lynda(free 10 days trial) - Have some awesome courses too.
• MIT(open course ware).
• Khan academy - Computer programming Course.
• edx - free online courses from the best university.
• best youtube channel:thenewboston