I am familiar with C and C++, and this is my first time learning JAVA through this lecture. What I felt was different from other lectures was that he explained in detail so that I could find references by directly looking at the HELP during the lecture, and he taught coding methods that are commonly used as an unspoken agreement among developers these days, but do not appear in books or compile errors. Data structures were also organized during the lecture, and Stack and Queue are used in JAVA, so the parts that require an understanding of data structures were organized during the lecture. I highly recommend this to those who are learning JAVA for the first time and those who are new to programming languages.