3_34.java

打印万年历

import javax.swing.JOptionPane; 
public class homework3_34 {
        public static void main(String[] args) {
    	String year=JOptionPane.showInputDialog(null,"请输入年份","Homework3_21",JOptionPane.QUESTION_MESSAGE);
    	String Day=JOptionPane.showInputDialog(null,"请输入"+year+"年1月1号的星期几（1~7）：","Homework3_21",JOptionPane.QUESTION_MESSAGE);
    	int day=Integer.parseInt(Day);
    	System.out.println("      January "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	int i;
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<31;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(24+day)%7;
    	System.out.print("\n");
    	System.out.println("      February "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<28;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(21+day)%7;
    	System.out.print("\n");
    	System.out.println("      March "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<31;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(24+day)%7;
    	System.out.print("\n");
    	System.out.println("      April "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<30;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(23+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      May "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<31;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(24+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      June "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<30;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(23+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      July "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<31;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(24+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      Auguest "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<31;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(24+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      September "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<30;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(23+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      Octorber "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<31;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(24+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      November "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<30;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(23+day)%7;
    	
    	System.out.print("\n");
    	System.out.println("      December "+year);
    	System.out.println("*****************************");
    	System.out.println("Sun Mon Tus Wed Thu Fri Sat");
    	for(i=0;i<day*4;i++)
    		System.out.print(" ");
    	for(i=0;i<31;i++)
    	{
    		int j=i+1;
    		if(j<10)
    			System.out.print(j+"   ");
    		else
    			System.out.print(j+"  ");
    		if((j+day)%7==0)
    			System.out.print("\n");
    	}
    	day=(24+day)%7;
    }
}