Why does Java limit the size of a method to 65535 byte?
I just compiled the following code
public class A {
public static void main(String... args) {
int i = 开发者_如何学运维3;
++i;
++i;
++i;
++i;
++i;
++i;
++i;
++i;
// repeat writing the expression ++i for 20,000 times
System.out.println(i);
}
}
And got the following error message
The code of method main(String...) is exceeding the 65535 bytes limit
Why does Java implement this limit? I don't see the rational since Java does include a goto_w instruction.
See the Java Virtual Machine Specification section 4.10:
4.10 Limitations of the Java Virtual Machine
- The amount of code per non-native, non-abstract method is limited to 65536 bytes by the sizes of the indices in the exception_table of the Code attribute (§4.7.3), in the LineNumberTable attribute (§4.7.8), and in the LocalVariableTable attribute (§4.7.9).
There's few good reasons to have a method that long in an object-oriented programming language.
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