工作中测试类1

public class TempTest {
    private void test1(A a){
    }
    public static void main(String[] args) {
    TempTest t = new TempTest();
    A a = new A();
    t.test1(a); //这里传递的参数a就是按引用传递
    }
    }
    class b{
    public int age = 0;
    }

public class TestDate {

    /**
     * @param args
     * @throws ParseException 
     */
    public static void main(String[] args) throws ParseException {
        String dateStr="20101010101010";
        SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddHHmmss");
        Date date=sdf.parse(dateStr);
        Calendar rightNow=Calendar.getInstance();
        rightNow.setTime(date);
        rightNow.add(Calendar.DATE, 7);
        Date d=rightNow.getTime();
        String dStr=sdf.format(d);
        System.out.println(dStr);
        Date now=new Date();
        
        if(now.after(d)){
            System.out.println("OK");
        }

    }

}

public class TestFunction {

    /**
     * @param args
     */
    public static void main(String[] args) {
        TestFunction t=new TestFunction();
        A a = new A();
        Integer b = null;
        Map<String, Integer> map=new HashMap<String, Integer>();
        map.put("b", b);
        
        t.test3(map);
        
        t.test1(a);
        System.out.println(a.aa);
        System.out.println(map.get("b"));

    }
    private  void test1(A a){
        test2(a);
    }
    private  void test2(A a){
        a.aa=111;
    }
    private  void test3(Map<String, Integer> map){
        test4(map);
    }
    private  void test4(Map<String, Integer> map){
        int bb=map.get("b");
        bb=2222;
        map.put("b", bb);
    }

}
class A{
    public int aa = 0;
    }

public class TestList {

    /**
     * @param args
     */
    public static void main(String[] args) {
        
        List<String> a=new ArrayList<String>();
        a.add("1");
        a.add("2");
        String b=a.remove(0);
        System.out.println(b);
    }

}

public class RegexMatches {
    
    public static void main(String args[]) {
        String str = "Pp000dsaP";
        String pattern = "(?=.*\\d)(?=.*[a-z])(?=.*[A-Z])[a-zA-Z0-9]{6,25}";

        Pattern r = Pattern.compile(pattern);
        Matcher m = r.matcher(str);
        System.out.println(m.matches());
    }

}