Main.java:1: ����: ��Ҫclass, interface��enum
int a = 1;
^
Main.java:1: ����: ��Ҫclass, interface��enum
int a = 1;
^
Main.java:2: ����: ��Ҫclass, interface��enum
int b = 2;
^
Main.java:3: ����: ��Ҫclass, interface��enum
System.out.println(a b);
^
4 ������