来自java小问题（请问能不能把它转换成switch语句）？

Question

if (j==1||j==(i-1)*2+1) { System.out.print("*"); } else{ System.out.print(" "); }

Answer 1

不能转的，因为Case后面得是常量，而(i-1)*2+1是变量，需要程序运行时才能确定，所以编译会报错：case expressions must be constant expressions

Answer 2

public class Test { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub int x; int j = 0 ,i = 0; x = getX(j , i); switch(x){ case 1: System.out.print("*"); break; case 2: System.out.print(" "); break; } } private static int getX(int j,int i) { // TODO Auto-generated method stub int x = 0 ; if(j==1||j==(i-1)*2+1){ x=1; }else{ x=2; } return x; } }