package basic.hello;

public class IfSwitch {

public static void PrintIf()

{

int x = 30;

if( x == 10 )

{

System.out.println("Value of X is 10");

}else if( x == 20 )

{

System.out.println("Value of X is 20");

}else if( x == 30 )

{

System.out.println("Value of X is 30");

}else

{

System.out.println("这是 else 语句");

}

}

public static void PrintSwitch()

{

char grade = 'B';

/*

* A输出优秀

* B和C输出良好

* D输出及格

* F输出不及格

* 不在范围内，输出未知等级

*/

switch(grade)

{

case 'A' :

System.out.println("优秀");

break;

case 'B' :

case 'C' :

System.out.println("良好");

break;

case 'D' :

System.out.println("及格");

break;

case 'F' :

System.out.println("不及格");

break;

default :

System.out.println("未知等级");

}

System.out.println("你的等级是 " + grade);

}

public static void main(String[] args) {

PrintIf();

PrintSwitch();

}

}