java问题，求解答
2.
package test;
public class test {
public static void main(String args[]){
int month=2;
switch(month){
case 1:
System.out.println("大月");
break;
case 2:
System.out.println("小月");
break;
case 3:
System.out.println("大月");
break;
case 4:
System.out.println("小月");
break;
case 5:
System.out.println("大月");
break;
case 6:
System.out.println("小月");
break;
case 7:
System.out.println("大月");
break;
case 8:
System.out.println("大月");
break;
case 9:
System.out.println("小月");
break;
case 10:
System.out.println("大月");
break;
case 11:
System.out.println("小月");
break;
case 12:
System.out.println("大月");
break;
}
}
}
3.
package test;
public class test {
public static void main(String args[]){
int s=2;
int w=2;
if(s>300){
if(w<2&&w>=0){
System.out.println("98%收费");
}else if(w<6&&w>=2){
System.out.println("95%收费");
}else if(w>=6){
System.out.println("92%收费");
}else{
System.out.println("货重怎么能为负值？");
}
}else if(s<300&&s>=0){
if(w<2&&w>=0){
System.out.println("100%收费");
}else if(w<6&&w>=2){
System.out.println("98%收费");
}else if(w>=6){
System.out.println("97%收费");
}else{
System.out.println("货重怎么能为负值？");
}
}else{
System.out.println("运输距离怎么能为负值？");
}
}
}