java参数传递

public class TestArgsTranser1 {
public static void main(String[] args) {
TestArgsTranser1 tt = new TestArgsTranser1();
DateSwap ds = new DateSwap();
tt.Swap(ds);
System.out.println("i=" + ds.i + " j=" + ds.j);

}

public void Swap(DateSwap ds) {
int temp = ds.i;
ds.i = ds.j;
ds.j = temp;
}
}

class DateSwap {
int i = 10;
int j = 5;
}