try块后必须有catch块。()
//case 1
try {
System.out.println("try");
}catch (Exception e){
System.out.println("catch");
}finally {
System.out.println("finally");
}
//case 2
try {
System.out.println("try");
}finally {
System.out.println("finally");
}
//case 3
try {
System.out.println("try");
}catch (Exception e){
System.out.println("catch");
}