Keywords in Java are all lowercase
.
Identifier rules (classes, methods, variables)
can use letters, numbers, underscores, dollar signs, numbers cannot start, letters are not limited to English letters.
Case-sensitive
Java statements are separated by semicolons. Spanning multiple lines, but string and variable names cannot span multiple lines
java-20-Keywords and Identifiers
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Origin blog.csdn.net/puyu2017/article/details/107064347
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