JAVA偶数和奇数问题

我把两问结合在一起写了下，如下所示：
public class Test {

public static void main(String[] args) {
int sum1 = 0, sum2 = 0;
for (int i = 1; i <= 100; i++)
if (i % 2 == 0)
sum2 += i;
else
sum1 += i;

System.out.println("1—100之间奇数的和:" + sum1);
System.out.println("1—100之间偶数的和:" + sum2);

}

}

int count=0;

for( int i=1;i<101;i++){
if(i%2==0){
count=count+i;
}
}
system.out.println("一百以内偶数之和为："+count);
-------------------------------------------------------
int count=0;

for( int i=1;i<101;i++){
if(i%2!=0){
count=count+i;
}
}
system.out.println("一百以内奇数之和为："+count);

/**
* Demo.java
* @ shuangwhywhy
*/

public class Demo
{
// Get the sum of the odd numbers:
public int sumOdd ()
{
int