封装类

package com.softfz.test;public class FBoolean {/** * @param args */public static void main(String[] args) {boolean flag = true;//基本类型的封装类，实现基本类型、对象类型、字符串类型之间的转换Boolean isOk = new Boolean(true);isOk = new Boolean("true");isOk = new Boolean("True");isOk = new Boolean("True1");System.out.println(isOk);flag = isOk.booleanValue();String str = isOk.toString();flag = Boolean.parseBoolean("false");str = "" + flag;int i = 10;Integer i2 = new Integer(i);i2 = new Integer("100");//i2 = new Integer("abc100");//NumberFormatException: For input string: "abc100"   if( str.matchs(regex)){}i = i2.intValue();str = i2.toString();i = Integer.parseInt("100");str = "" + i;str = Integer.toString(i);System.out.println(i2);char ch = 97;flag = Character.isLetterOrDigit(ch);flag = Character.isWhitespace(ch);System.out.println(flag);ch = Character.toUpperCase(ch);System.out.println(ch);}}