上一章节中，了解了如何在 Lambda 表达式中访问局部变量。与局部变量相比，在 Lambda 表达式中对成员变量和静态变量拥有读写权限：
@FunctionalInterface
interface Converter<F, T> {
T convert(F from);
}
class Lambda4 {
static int outerStaticNum;
int outerNum;
void testScopes() {
Converter<Integer, String> stringConverter1 = (from) -> {
outerNum = 23;
return String.valueOf(from);
};
Converter<Integer, String> stringConverter2 = (from) -> {
outerStaticNum = 72;
return String.valueOf(from);
};
}
}
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上一章节中，了解了如何在 Lambda 表达式中访问局部变量。与局部变量相比，在 Lambda 表达式中对成员变量和静态变量拥有读写权限：