int类型和String类型的相互转换

/* * int类型和String类型的相互转换 *  * int -- String * String.valueOf(number) *  * String -- int * Integer.parseInt(s) */public class IntegerDemo {public static void main(String[] args) {// int -- Stringint number = 100;// 方式1String s1 = "" + number;System.out.println("s1:" + s1);// 方式2String s2 = String.valueOf(number);System.out.println("s2:" + s2);// 方式3// int -- Integer -- StringInteger i = new Integer(number);String s3 = i.toString();System.out.println("s3:" + s3);// 方式4// public static String toString(int i)String s4 = Integer.toString(number);System.out.println("s4:" + s4);System.out.println("-----------------");// String -- intString s = "100";// 方式1// String -- Integer -- intInteger ii = new Integer(s);// public int intValue()int x = ii.intValue();System.out.println("x:" + x);//方式2//public static int parseInt(String s)int y = Integer.parseInt(s);System.out.println("y:"+y);}}