Which symbol is used for line comments in Java?

In Java, the symbol used for line comments is "//". This notation allows you to write comments that extend to the end of the line. Any text following the "//" on the same line is treated as a comment and is ignored by the Java compiler. This is particularly useful for adding brief explanations or notes within your code without affecting its execution.

Using "//" is a concise way to comment on individual lines, which helps in making the code more readable and maintainable, especially when you want to document specific parts of the code.

Other options serve different purposes. For example, "/" is commonly used to begin a multi-line comment, which continues until it finds the corresponding "/". The "#" symbol is not a valid comment marker in Java, and "--" is not recognized as a comment delimiter. Understanding the intended use of these symbols is essential when writing or reviewing Java code.