JAVAWarningApril 15, 2026
Syntax Error
Syntax error on token "def", delete this token
What This Error Means
This error occurs when Java encounters a token that doesn't match the expected syntax. In this case, the word 'def' is used, which is a keyword in Python but not in Java.
Why It Happens
This error typically happens when a Java developer accidentally copies code from a Python or JavaScript project and pastes it into a Java file. The 'def' keyword is often used to define a function in other languages, but it's not a valid keyword in Java.
How to Fix It
- 1To fix this error, replace the 'def' keyword with a valid Java keyword, such as 'public' or 'private'. For example, if you're trying to define a method, replace 'def' with 'public' or 'private'.
Example Code Solution
❌ Before (problematic code)
Java
def myMethod() {
System.out.println("Hello World");
}✅ After (fixed code)
Java
public void myMethod() {
System.out.println("Hello World");
}Fix for Syntax error on token "def", delete this token
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