我不确定如何将公共静态方法与仅返回字符的if / else语句一起使用。该程序应该取x,y并返回坐标所位于的象限。 (Java的菜鸟!)
import javax.swing.JOptionPane;
public class Assignment13 {
public static void main(String[] args) {
String userInputx,
userInputy;
double x, y, answer;
userInputx = JOptionPane.showInputDialog("Please enter your x coordinate.");
x = Double.parseDouble(userInputx);
userInputy = JOptionPane.showInputDialog("Please enter your y coordinate.");
y = Double.parseDouble(userInputy);
answer = MethodQuad.quadrant(x, y);
System.out.println("The coordinates " + x + y + "are located Quadrant " + answer);
}
}
class MethodQuad {
public static double quadrant(double x, double y) {
if (x > 0 && y > 0) {
return System.out.println("1");
} else if (x < 0 && y > 0) {
return System.out.println("2");
} else if (x < 0 && y < 0) {
return System.out.println("3");
} else if (x < 0 && y > 0) {
return System.out.println("4");
} else {
return System.out.println("0");
}
}
}
最佳答案
它的工作方式类似于另一种编程语言。如果您写了返回值,则必须返回一些值)
class MethodQuad {
public static int quadrant(double x, double y)
{
if(x > 0 && y > 0)
return 1;
else if(x < 0 && y > 0)
return 2;
else if(x < 0 && y < 0)
return 3;
else if (x<0 && y >0)
return 4;
else
return 0;
}
}