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Suppose you change println to printline in the HelloPrinter.java program. Is this a compile-time error or a run-time error?

Question

Suppose you change println to printline in the HelloPrinter.java program. Is this a compile-time error or a run-time error?

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Solution

This would be a compile-time error.

In Java, the correct method to print a line to the console is println(), not printline(). If you change println to printline in the HelloPrinter.java program, the Java compiler will not recognize printline as a valid method.

Here are the steps of what would happen:

  1. You write and save your Java program with printline instead of println in HelloPrinter.java.
  2. You attempt to compile your program using the Java compiler (javac).
  3. The compiler tries to convert your source code into bytecode.
  4. When it encounters printline, it doesn't recognize it as a valid method.
  5. The compiler then throws a compile-time error.
  6. The error message will likely point to the line of code with printline and may say something like "cannot find symbol - method printline(java.lang.String)".
  7. To fix this error, you would need to change printline back to println.

This problem has been solved

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