JavaTest

code public class arrays {

/**
 * @param args
 */
public static void main(String[] args) {
	// TODO Auto-generated method stub
     int[]  a = {1,2,3,4,5};
     int[] l = {1001,1002,1003,1004,1005};
     System.arraycopy(a, 2, l, 2, 3);
     for(int i=0; i<l.length; i++)
    	 System.out.println(i + ": "+ l[i]);
     }

}

result 0: 1001 1: 1002 2: 3 3: 4 4: 5

---

import java.util.Scanner;

public class test {

/**
 * @param args
 */

public static void main(String[] args) {
	
	Scanner in = new Scanner(System.in);
	int NMAX = in.nextInt();
	int i, j, k;
	int[][] odds = new int[NMAX][];
	for(i=0; i<NMAX; i++){
		odds[i] = new int[i+1];
	}
	
	for(i=0; i<odds.length; i++){
	for(j=0; j<odds[i].length; j++){
			
			int lottterOdds= 1;
			for(k=1; k<=j; k++)
                        lottterOdds = lottterOdds*(i-k+1)/k;             
             odds[i][j] = lottterOdds;			
		}
	}
    	a
	    for(int[] row : odds){
    		for(int odd:row)
    		     System.out.printf("%4d", odd);
    		System.out.println();
    	}
}

}

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打印本月日历

mport java.text.DateFormatSymbols; import java.util.*;

public class test {

/**
 * @param args
 */
public static void main(String[] args) {
	// TODO Auto-generated method stub
//	Locale.setDefault(Locale.ITALY);
	
      GregorianCalendar d = new GregorianCalendar();
       
      int  today = d.get(Calendar.DAY_OF_MONTH);
      int  month = d.get(Calendar.MONTH);
      
      d.set(Calendar.DAY_OF_MONTH, 1);
      
      int weekday = d.get(Calendar.DAY_OF_WEEK);
      
      int firstDayOfWeek = d.getFirstDayOfWeek();
      int indent = 0;
      while(weekday != firstDayOfWeek)
      {
    	  indent++;
    	  d.add(Calendar.DAY_OF_MONTH, -1);
    	  weekday = d.get(Calendar.DAY_OF_WEEK);
      }
      
      String[]  weekdayNames = new DateFormatSymbols().getShortWeekdays();
      do 
      {
    	  System.out.printf("%4s", weekdayNames[weekday]);
    	  d.add(Calendar.DAY_OF_MONTH, 1);
    	  weekday = d.get(Calendar.DAY_OF_WEEK);
      }
      while(weekday != firstDayOfWeek);  
      System.out.println();
      
      for(int i =1; i<=indent; i++)
    	  System.out.print(" ");
      
      d.set(Calendar.DAY_OF_MONTH, 1);
      do {
    	  int day = d.get(Calendar.DAY_OF_MONTH);
    	  System.out.printf("%3d", day);
		  
    	  if(day == today) System.out.print("*");
    	  else System.out.print(" ");
    	  
    	  d.add( Calendar.DAY_OF_MONTH,1);
    	  weekday = d.get(Calendar.DAY_OF_WEEK);
    	  	
    	  if(weekday == firstDayOfWeek) System.out.println();
	} while (d.get(Calendar.MONTH) == month);
      
     if(weekday != firstDayOfWeek) System.out.println();
}

}

---

GOUZHAO LEI

import java.util.*; import java.util.jar.Attributes.Name;

import org.omg.CORBA.PRIVATE_MEMBER; import org.omg.CORBA.PUBLIC_MEMBER;

public class EmployeeTest {

/**
 * @param args
 */
public static void main(String[] args) {
	// TODO Auto-generated method stub
  Employee[] staff = new Employee[3];
  
  staff[0] = new Employee("zyh1", 10001, 1992, 12, 20);
  staff[1] = new Employee("zyh2", 10002, 1997, 5, 15);
  staff[2] = new Employee("zyh3", 10003, 2005, 7, 4);
  
  for(Employee e: staff){
	  e.raiseSalary(5);
  }
  
  for(Employee e: staff){
	  System.out.println("name=" + e.getName() + ",salary=" + e.getSalary() + ", hireDay=" + e.getHireDay() );
  }
}

}

class Employee { public Employee(String n, double s, int year, int month, int day ) { name = n; salary = s; GregorianCalendar calendar = new GregorianCalendar(year, month-1, day); hireDay = calendar.getTime(); }

    public String getName(){
    	return name;
    }
     public double getSalary(){
    	 return salary;
     }
     public Date getHireDay(){
    	   return hireDay;
     }
     
     public void raiseSalary(double byPercent){	 
    	    double raise = salary * byPercent / 100 ;
    	    salary += raise;
     }
   
private String name;
private double salary;
private Date hireDay;

}

---