After studying java in Dana, Zhengzhou for four months, I have learned and mastered the relevant knowledge points of java, but I know that java has just started on the endless learning road and needs to continue to work hard. Before learning java, I heard many people say that Java is difficult to learn. Later, I learned that my basic talent is very important. The key is to have a teacher's guidance on the way to study, which can save a lot of unnecessary time, and the teacher's explanation is still deeper than my own self-study. Here I share my experience in learning java. Learning Java must be divided into three steps: 1. Prepare carefully before class. 2. Listen carefully in class. 3. Practice carefully after class. Java is interesting to learn, and learning Java can improve logical ability. In the process of learning Java, we practiced the operating procedures and completed them well! I met some problems when I was doing the program, and I was very upset after a long time, but I am glad that teachers and students have been patiently enlightening and adjusting the state. Because Java is an object-oriented programming language, people who are new to Java may feel more abstract, but it doesn't matter. Don't worry. Listen to the teacher carefully in class, slowly understand some conceptual knowledge, and do more exercises after class. Practice makes perfect. Even if you have a good memory, it's no use not practicing after class. When doing a project, only by practicing more can you skillfully write the code you want. After several stages of practice, I feel that I have reviewed what I have learned. Through the communication between classmates, I feel that the learning atmosphere in our class is more intense. I hope this article can bring some encouragement and help to students who are studying in Dana or want to participate in Dana training.