public?class?Staff?{
public?static?void?main(String[]?args)?throws?Exception?{
String?hellostr?=?"Hello?World?And?You?123456!!!";
//(1)
System.out.println("length?:?"?+?hellostr.length());
//(2)
String[]?helloary?=?hellostr.split("?");
System.out.println("Split?by?spacebar:");
for?(int?i=0;i<helloary.length;i++)?{
System.out.printf("%d?%s\n",?i,?helloary[i]);
}
//(3)
int?position?=?hellostr.indexOf("1");
int?lastpostion?=?hellostr.indexOf("6")+1;
String?substr?=?hellostr.substring(position,?lastpostion);
System.out.println("substr?:?1?position?at?"?+?position?+?",?6?position?at?"?+?lastpostion);
int?intval?=?Integer.parseInt(substr);
//(4)
System.out.println("int?value?is?:"?+?intval);
//(5)
float?fval?=?Float.parseFloat(substr);
System.out.println("float?value?is?:"?+?fval);
}
}