SD1 examination summer 2025

Question

Q:

We consider:

Code Output

char value = 10224;
System.out.println(value);

⟰

Hint: This is no printing error, the output actually shows up.

int value = 10224;
System.out.println(value);

Why do we get two different outputs ⟰ and 10224 for the very same value? Describe the underlying mechanism.

Answer 1

A:

out is a static member in class System of type PrintStream. Within this class the println(...) method is multiply overloaded. Among these are:

println(char)

Printing the character corresponding to the provided Unicode value.
println(int)

Printing the provided value as a regular decimal: The documentation of print(int) refers to String.valueOf(int).

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