This course is offered at Coursera and is part of the Java Programming and Software Engineering Fundamentals.
This is the second course of the Specialization, Link to the course.
Some code should be run in a custom Bluej Development Environment made by Duke's University especially for this course. You can get the IDE from the University website here.
I finished the course in 3 months due to working 2 full-time jobs but it was a great experience. Here's the link to the Certificate. 1- Edit, compile, and run a Java program;
2- Use conditionals and loops in a Java program;
3- Use Java API documentation in writing programs.
4- Debug a Java program using the scientific method;
5- Write a Java method to solve a specific problem;
6- Develop a set of test cases as part of developing a program;
7- Create a class with multiple methods that work together to solve a problem; and
8- Use divide-and-conquer design techniques for a program that uses multiple methods.