[Super invincible and detailed Han Shunping's java notes] From entry to proficiency---common mistakes

Table of contents

It’s easy to make mistakes when learning Java for beginners

1.javac: File not found:

2.java: Error class

3.java: Error: ';' required

4.java: error: symbol not found

5.java: Error: End of file reached while parsing

Errors that are difficult to correct are business logic errors and environmental errors.

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It’s easy to make mistakes when learning Java for beginners

1.javac: File not found:

Solution:

1. The source file name does not exist or is written incorrectly.

2. The current path is wrong

3. Check file extension

2.java: Error class

 Solution:

The file name and public class name must be consistent

3.java: Error: ';' required

 Solution:

Compilation fails. Pay attention to the number of lines where the error occurs, and then correct the error at the specified location in the source code.

4.java: error: symbol not found

Solution:

If a word is spelled incorrectly, go to the specified location in the source code to correct it.

 5.java: Error: End of file reached while parsing

Solution:

Pay attention to whether there is no '}' at the end