java问题？？？？？？？

Question

public class Sum { public static void main(String[] args) { int sum = 0; number1 = 1; number2 = 2; sum = number1 + number2; { System.out.println("sum"); } }}代码有什么问题

Answer 1

你应该给 number1 和number2像sum那样 给他们定义为int类型 int number1 int number2 代码如下
public class Sum {
public static void main(String[] args) {
int sum = 0;
int number1 = 1;
int number2 = 2;
sum = number1 + number2;
{
System.out.println("sum = " + sum);
}
}
}

Answer 2

没 问 题