Why is Java so difficult to learn?

In school, you start to touch Java, and when you learn the basics of grammar. After graduation, because did not find the internship work and did not engage in Java development, slowly to the Java lost. Several colleagues from the school, some entered the project implementation industry, did the project manager. Some continue to engage in Java development, one of the students into Ali, and some do the operation, I chose to go to test this road.

In recent years of work, has studied the database, server operation and maintenance, testing technology and other basic IT technology, but recently wanted to get the automation up, in addition to a test tool jmeter, if you can write automated test framework in the Java language, it is even more awesome. So want to pick up the Java knowledge has been lost, but read a few times after the book, Basic grammar and basic understanding, or feel not to start. At this time in my heart, feel that Java is my dead hole, a mishap. Think of this Java problem, I am very tangled.

I'm thinking, is there a way to learn Java in combat? Master Java technology in the actual project operation process.

In the dead of night, in my heart wow cool. I'm learning python outside of work, but there's no real way to get started.

There is not a good goal and a work plan.

Now testing technology, I combed a bit, the overall goal in the future is to take the technology + management positions. The techniques to be mastered at present are:

1, Interface Automation test (using jmeter tools, ability to test MySQL performance, continuous integration)

2, mastering Python technology.

3, pick up Java technology. (a bit of a panic in my heart, I feel Java is really difficult ah, and Java error, an error is a large red.) Used to do UI Automation tests at the previous company, Java+appium+testng. I don't want to run away for a long time. ）

Good pain, good pain.

First set a small goal, first of all JMeter technology to learn fine. I hope we can go further in the future on the technology road.

Why is Java so difficult to learn?