Why Am I Getting the \'error: \'.class\' expected\' Compilation Error in Java?

Understanding 'error: '.class' expected'

Error Description:

This error occurs during compilation when the compiler encounters a type name in a context where it expects an expression. This error message indicates that the compiler is confused and believes a .class expression is required at that location.

Causes:

• Type Instead of Expression: The compiler expected an expression (e.g., a variable or method call) but encountered a type name (e.g., int or int[]).
• Syntax Error: A separate syntax error may have triggered the compiler's confusion.

Fixes:

The solution depends on the intended code:

• Type Cast: If you intended a type cast, use parentheses around the type:

double d = 1.9;
int i = (int) d; // Correct: cast 1.9 to integer

• Remove Type: If you meant to assign or pass a value as-is, remove the type declaration:

int j = someFunction(a); // Correct ... assuming 'a' is appropriate

Additional Examples:

• Missing parentheses:

someMethod(array[]);

• Incorrect parameter syntax:

int i = someMethod(int j); // Should be: int i = someMethod(j);

• Invalid typecast:

int i = int(2.0); // Should be: int i = (int) 2.0;

• Syntactic error:

int[]; letterCount = new int[26];

• Redundant semicolon:

if (someArray[] > 80) { // Should be: if (someArray[someIndex] > 80)

• Insufficient curly brackets:

if ((withdraw % 5 == 0) && (acnt_balc >= withdraw + 0.50))
    double cur = acnt_balc - (withdraw + 0.50);
    System.out.println(cur);
else
    System.out.println(acnt_balc);

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