at java.lang.Thread.run(Thread.java:745) 症状原因:根据报错提示,“equal symbol expected”意思是缺少=号,定位在第1行17列。检查发现不仅缺了等号,还缺了引号:import =“ java.util.List” 解决办法:
isn’t a recognized mathematical symbol (in fact, I don’t think there is a LaTeX symbol for it, I had to “hack” it using \stackrel{?}{=} to get it to appear here). What the student really means is that a given line is true if and only if the next line is true. Then, ...