Java 显示日历

拼搏现实的明天。 2021-10-29 21:32 352阅读 0赞

##       由键盘输入哪一年的哪一个月的第一天是星期几，输出这个月的日历，比如输入：February 2019 thu （为方便月份和星期几不分大小写）表示 ：2019年8月份的第一天是星期四 ,显示结果如下： ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDExOTUxNw_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDExOTUxNw_size_16_color_FFFFFF_t_70 1][]

## 实现代码如下： ##

package java_1;
    
    import java.util.Scanner;
    
    public class Exercises_2{
    	public static void main(String[] args){
    		Scanner input=new Scanner (System.in);
    		
    		try {
    			String month,day;
    			int year,flag,N,i,z;
    			month=input.next();
    			year=input.nextInt();   //January 2013 sun
    			day=input.next();
    			if(month.compareToIgnoreCase("January")==0||month.compareToIgnoreCase("March")==0
    					||month.compareToIgnoreCase("May")==0||month.compareToIgnoreCase("July")==0
    					||month.compareToIgnoreCase("August")==0||month.compareToIgnoreCase("October")==0
    					||month.compareToIgnoreCase("December")==0||month.compareToIgnoreCase("April")==0
    					||month.compareToIgnoreCase("February")==0||month.compareToIgnoreCase("November")==0
    					||month.compareToIgnoreCase("June")==0||month.compareToIgnoreCase("September")==0)
    			{
    				if(day.compareTo("Sun")==0||day.compareTo("sun")==0) 
    				{
    					flag=7;
    				}
    			else if(day.compareTo("Mon")==0||day.compareTo("mon")==0) 
    				{
    					flag=6;
    				}
    			else if(day.compareTo("Tue")==0||day.compareTo("tue")==0) 
    				{
    					flag=5;
    				}
    			
    			else if(day.compareTo("Wed")==0||day.compareTo("wed")==0)
    				{
    				flag=4;
    				}
    			else if(day.compareTo("Thu")==0||day.compareTo("thu")==0) 
    				{
    				flag=3;
    				}
    			else if(day.compareTo("Fri")==0||day.compareTo("fri")==0)
    				{
    				flag=2;
    				}
    			else  
    				{
    				flag=1;
    				}
    			
    			if(year%4==0&&month.compareToIgnoreCase("February")==0)     //如果闰年并且十二月份
    			{
    				N=29;                        //（闰年里二月份29天）
    			}
    			else if(month.compareToIgnoreCase("February")==0)  //如果不是闰年，但是二月份
    			{
    				N=28;                       //非闰年2月份是28天
    			}
    			//如果是大月 1，3，5，7，8，10，12  里一个月31天 
    			else if(month.compareToIgnoreCase("January")==0||month.compareToIgnoreCase("March")==0
    			||month.compareToIgnoreCase("May")==0||month.compareToIgnoreCase("July")==0
    			||month.compareToIgnoreCase("August")==0||month.compareToIgnoreCase("October")==0
    			||month.compareToIgnoreCase("December")==0)                           //不是闰年也不是二月份
    			{
    				N=31;                       //一个月
    			}
    			//如果是小月 4，6，9，11 里一个月30天 
    			else  
    			{
    				N=30;
    			}
    			System.out.print("\t\t"+month+" "+year+"\n");
    			for(i=0;i<=51;i++)  
    				System.out.print("-");
    			System.out.println("\nSun\tMon\tTue"
    					+ "\tWed\tThu\tFri\tSat");
    			
    			for(i=1;i<=N;i++)
    			{
    				if(i==1)
    				{
    					for(z=0;z<7-flag;z++)
    					System.out.print("\t");
    				}
    				System.out.printf("%2d\t",i);
    				if(flag==i)
    				{
    					System.out.print("\n");
    				}
    				if(flag+7==i)                 
    				{
    					System.out.print("\n");
    					flag=i;
    				}
    				
    			}
    				
    			System.out.print("\n");
    			for(i=0;i<=51;i++)  
    			System.out.print("-");
    			
    			}
    			else
    			{
    				System.out.print("The input is error\n");
    			}
    			
    		}
    		finally {
    			input.close();
    		}
    	}
    }
    //August 2019 thu

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