import java.util.Calendar;
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public class MainTester {
public static void main(String[] args) {
Calendar calendar = Calendar.getInstance();
//設(shè)置為12月31日
calendar.set(Calendar.MONTH, 11);
calendar.set(Calendar.DAY_OF_MONTH, 31);
System.out.println("現(xiàn)在日期：" + calendar.getTime());
//再增加一天
calendar.add(Calendar.DAY_OF_MONTH, 1);
System.out.println("增加后的日期：" + calendar.getTime());
}
}
使用Calendar就可以實(shí)現(xiàn)，很簡(jiǎn)單，程序輸出為：
現(xiàn)在日期：Tue Dec 31 11:50:55 CST 2013
增加后的日期：Wed Jan 01 11:50:55 CST 2014
import java.util.*;
public class Judge {
/**
* @param args
*/
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("輸入年份：");
int Num = input.nextInt();
int Y = Num%4;
if ( Y == 0 ) {
System.out.println(+ Num +"份為閏年");
}else{
System.out.println(Num+"份為平年");
}
}
}
這是我當(dāng)年學(xué)java的時(shí)候找到資料。
連連看java源代碼
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class lianliankan implements ActionListener
{
JFrame mainFrame; //主面板
Container thisContainer;
JPanel centerPanel,southPanel,northPanel; //子面板
JButton diamondsButton[][] = new JButton[6][5];//游戲按鈕數(shù)組
JButton exitButton,resetButton,newlyButton; //退出，重列，重新開(kāi)始按鈕
JLabel fractionLable=new JLabel("0"); //分?jǐn)?shù)標(biāo)簽
JButton firstButton,secondButton; //分別記錄兩次被選中的按鈕
int grid[][] = new int[8][7];//儲(chǔ)存游戲按鈕位置
static boolean pressInformation=false; //判斷是否有按鈕被選中
int x0=0,y0=0,x=0,y=0,fristMsg=0,secondMsg=0,validateLV; //游戲按鈕的位置坐標(biāo)
int i,j,k,n;//消除方法控制
public void init(){
mainFrame=new JFrame("JKJ連連看");
thisContainer = mainFrame.getContentPane();
thisContainer.setLayout(new BorderLayout());
centerPanel=new JPanel();
southPanel=new JPanel();
northPanel=new JPanel();
thisContainer.add(centerPanel,"Center");
thisContainer.add(southPanel,"South");
thisContainer.add(northPanel,"North");
centerPanel.setLayout(new GridLayout(6,5));
for(int cols = 0;cols 6;cols++){
for(int rows = 0;rows 5;rows++ ){
diamondsButton[cols][rows]=new JButton(String.valueOf(grid[cols+1][rows+1]));
diamondsButton[cols][rows].addActionListener(this);
centerPanel.add(diamondsButton[cols][rows]);
}
}
exitButton=new JButton("退出");
exitButton.addActionListener(this);
resetButton=new JButton("重列");
resetButton.addActionListener(this);
newlyButton=new JButton("再來(lái)一局");
newlyButton.addActionListener(this);
southPanel.add(exitButton);
southPanel.add(resetButton);
southPanel.add(newlyButton);
fractionLable.setText(String.valueOf(Integer.parseInt(fractionLable.getText())));
northPanel.add(fractionLable);
mainFrame.setBounds(280,100,500,450);
mainFrame.setVisible(true);
}
public void randomBuild() {
int randoms,cols,rows;
for(int twins=1;twins=15;twins++) {
randoms=(int)(Math.random()*25+1);
for(int alike=1;alike=2;alike++) {
cols=(int)(Math.random()*6+1);
rows=(int)(Math.random()*5+1);
while(grid[cols][rows]!=0) {
cols=(int)(Math.random()*6+1);
rows=(int)(Math.random()*5+1);
}
this.grid[cols][rows]=randoms;
}
}
}
public void fraction(){
fractionLable.setText(String.valueOf(Integer.parseInt(fractionLable.getText())+100));
}
public void reload() {
int save[] = new int[30];
int n=0,cols,rows;
int grid[][]= new int[8][7];
for(int i=0;i=6;i++) {
for(int j=0;j=5;j++) {
if(this.grid[i][j]!=0) {
save[n]=this.grid[i][j];
n++;
}
}
}
n=n-1;
this.grid=grid;
while(n=0) {
cols=(int)(Math.random()*6+1);
rows=(int)(Math.random()*5+1);
while(grid[cols][rows]!=0) {
cols=(int)(Math.random()*6+1);
rows=(int)(Math.random()*5+1);
}
this.grid[cols][rows]=save[n];
n--;
}
mainFrame.setVisible(false);
pressInformation=false; //這里一定要將按鈕點(diǎn)擊信息歸為初始
init();
for(int i = 0;i 6;i++){
for(int j = 0;j 5;j++ ){
if(grid[i+1][j+1]==0)
diamondsButton[i][j].setVisible(false);
}
}
}
public void estimateEven(int placeX,int placeY,JButton bz) {
if(pressInformation==false) {
x=placeX;
y=placeY;
secondMsg=grid[x][y];
secondButton=bz;
pressInformation=true;
}
else {
x0=x;
y0=y;
fristMsg=secondMsg;
firstButton=secondButton;
x=placeX;
y=placeY;
secondMsg=grid[x][y];
secondButton=bz;
if(fristMsg==secondMsg secondButton!=firstButton){
xiao();
}
}
}
public void xiao() { //相同的情況下能不能消去。仔細(xì)分析，不一條條注釋
if((x0==x (y0==y+1||y0==y-1)) || ((x0==x+1||x0==x-1)(y0==y))){ //判斷是否相鄰
remove();
}
else{
for (j=0;j7;j++ ) {
if (grid[x0][j]==0){ //判斷第一個(gè)按鈕同行哪個(gè)按鈕為空
if (yj) { //如果第二個(gè)按鈕的Y坐標(biāo)大于空按鈕的Y坐標(biāo)說(shuō)明第一按鈕在第二按鈕左邊
for (i=y-1;i=j;i-- ){ //判斷第二按鈕左側(cè)直到第一按鈕中間有沒(méi)有按鈕
if (grid[x][i]!=0) {
k=0;
break;
}
else //K=1說(shuō)明通過(guò)了第一次驗(yàn)證
}
if (k==1) {
linePassOne();
}
}
if (yj){ //如果第二個(gè)按鈕的Y坐標(biāo)小于空按鈕的Y坐標(biāo)說(shuō)明第一按鈕在第二按鈕右邊
for (i=y+1;i=j ;i++ ){ //判斷第二按鈕左側(cè)直到第一按鈕中間有沒(méi)有按鈕
if (grid[x][i]!=0){
k=0;
break;
}
else
}
if (k==1){
linePassOne();
}
}
if (y==j ) {
linePassOne();
}
}
if (k==2) {
if (x0==x) {
remove();
}
if (x0x) {
for (n=x0;n=x-1;n++ ) {
if (grid[n][j]!=0) {
k=0;
break;
}
if(grid[n][j]==0 n==x-1) {
remove();
}
}
}
if (x0x) {
for (n=x0;n=x+1 ;n-- ) {
if (grid[n][j]!=0) {
k=0;
break;
}
if(grid[n][j]==0 n==x+1) {
remove();
}
}
}
}
}
for (i=0;i8;i++ ) { //列
if (grid[i][y0]==0) {
if (xi) {
for (j=x-1;j=i ;j-- ) {
if (grid[j][y]!=0) {
k=0;
break;
}
else
}
if (k==1) {
rowPassOne();
}
}
if (xi) {
for (j=x+1;j=i;j++ ) {
if (grid[j][y]!=0) {
k=0;
break;
}
else
}
if (k==1) {
rowPassOne();
}
}
if (x==i) {
rowPassOne();
}
}
if (k==2){
if (y0==y) {
remove();
}
if (y0y) {
for (n=y0;n=y-1 ;n++ ) {
if (grid[i][n]!=0) {
k=0;
break;
}
if(grid[i][n]==0 n==y-1) {
remove();
}
}
}
if (y0y) {
for (n=y0;n=y+1 ;n--) {
if (grid[i][n]!=0) {
k=0;
break;
}
if(grid[i][n]==0 n==y+1) {
remove();
}
}
}
}
}
}
}
public void linePassOne(){
if (y0j){ //第一按鈕同行空按鈕在左邊
for (i=y0-1;i=j ;i-- ){ //判斷第一按鈕同左側(cè)空按鈕之間有沒(méi)按鈕
if (grid[x0][i]!=0) {
k=0;
break;
}
else //K=2說(shuō)明通過(guò)了第二次驗(yàn)證
}
}
if (y0j){ //第一按鈕同行空按鈕在與第二按鈕之間
for (i=y0+1;i=j ;i++){
if (grid[x0][i]!=0) {
k=0;
break;
}
else
}
}
}
public void rowPassOne(){
if (x0i) {
for (j=x0-1;j=i ;j-- ) {
if (grid[j][y0]!=0) {
k=0;
break;
}
else
}
}
if (x0i) {
for (j=x0+1;j=i ;j++ ) {
if (grid[j][y0]!=0) {
k=0;
break;
}
else
}
}
}
public void remove(){
firstButton.setVisible(false);
secondButton.setVisible(false);
fraction();
pressInformation=false;
k=0;
grid[x0][y0]=0;
grid[x][y]=0;
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==newlyButton){
int grid[][] = new int[8][7];
this.grid = grid;
randomBuild();
mainFrame.setVisible(false);
pressInformation=false;
init();
}
if(e.getSource()==exitButton)
System.exit(0);
if(e.getSource()==resetButton)
reload();
for(int cols = 0;cols 6;cols++){
for(int rows = 0;rows 5;rows++ ){
if(e.getSource()==diamondsButton[cols][rows])
estimateEven(cols+1,rows+1,diamondsButton[cols][rows]);
}
}
}
public static void main(String[] args) {
lianliankan llk = new lianliankan();
llk.randomBuild();
llk.init();
}
}
//old 998 lines
//new 318 lines
/**
?*?獲取兩個(gè)日期相差的天數(shù)
?*?@param?big
?*?@param?small
?*?@return
?*/
public?static?int?getTwoDatesDifOfDay(Date?big,Date?small){
Calendar?cal1?=?Calendar.getInstance();
cal1.setTime(big);
Calendar?cal2?=?Calendar.getInstance();
cal2.setTime(small);
if(cal1.get(Calendar.MONTH)?!=?11??cal2.get(Calendar.MONTH)==11){//跨年
Calendar?cal3?=?Calendar.getInstance();
cal3.set(Calendar.MONTH,?11);
cal3.set(Calendar.DAY_OF_MONTH,?31);
return?cal3.get(Calendar.DAY_OF_YEAR)-cal2.get(Calendar.DAY_OF_YEAR)+cal1.get(Calendar.DAY_OF_YEAR);
}else{
return? cal1.get(Calendar.DAY_OF_YEAR)-cal2.get(Calendar.DAY_OF_YEAR);
}
}
/**
?*?獲取兩個(gè)日期相差的周數(shù)
?*?@param?big
?*?@param?small
?*?@return
?*/
public?static?int?getTwoDatesDifOfWeek(Date?big,Date?small){
Calendar?cal1?=?Calendar.getInstance();
cal1.setTime(big);
Calendar?cal2?=?Calendar.getInstance();
cal2.setTime(small);
if(cal1.get(Calendar.MONTH)?!=?11??cal2.get(Calendar.MONTH)==11){//跨年
Calendar?cal3?=?Calendar.getInstance();
cal3.set(Calendar.MONTH,?11);
cal3.set(Calendar.DAY_OF_MONTH,?31);
return?cal3.get(Calendar.WEEK_OF_YEAR)-cal2.get(Calendar.WEEK_OF_YEAR)+cal1.get(Calendar.WEEK_OF_YEAR);
}else{
return? cal1.get(Calendar.WEEK_OF_YEAR)-cal2.get(Calendar.WEEK_OF_YEAR);
}
}
給定一個(gè)時(shí)間范圍判斷周的范圍并且跨年為新的一周即跨年時(shí)分為兩周
public class Week{
public static void main(String[] args) {
SimpleDateFormat myFormatterExt = new SimpleDateFormat("yyyy-MM-dd");
Date b_date = null;
Date e_date = null;
try {
b_date = myFormatterExt.parse("2010-12-26");//開(kāi)始時(shí)間
e_date = myFormatterExt.parse("2011-01-06");//結(jié)束時(shí)間
//e_date = myFormatterExt.parse("2011-01-08");
// date= myFormatterExt.parse("2010-12-31 00:00:00");
// String week = HNFDCommon.getWeek(date);
//System.out.println(week+"week");
} catch (ParseException e) {
e.printStackTrace();
}
b_date = getFirstDayOfWeek(b_date);
e_date = getLastDayOfWeek(e_date);
int dayOfweek = 0; //日期為星期幾判斷12月最后一個(gè)星期用
while (b_date.getTime() == e_date.getTime() || b_date.before(e_date))
{
String week = HNFDCommon.getWeek(b_date);
System.out.println(week+"ddd"+myFormatterExt.format(b_date));
String days = myFormatterExt.format(b_date).substring(8,10);
if(dayOfweek0){
b_date.setDate(b_date.getDate() +(7-dayOfweek));
dayOfweek = 0;
}else{
if(Integer.parseInt(week.substring(5,7))=50 (31- Integer.parseInt(days))7){
Date c_date = new Date();
c_date.setYear(b_date.getYear());
c_date.setMonth(b_date.getMonth());
c_date.setDate(31);
dayOfweek = getDayOfWeek(c_date);
b_date.setDate(b_date.getDate() +dayOfweek-1);
if(week.equals(HNFDCommon.getWeek(b_date))){
b_date.setDate(b_date.getDate() +(7-dayOfweek));
dayOfweek = 0;
}
}
else{
b_date.setDate(b_date.getDate() +7);
}
}
}
}
public static Date getLastDayOfWeek(Date date) {
SimpleDateFormat sd = new SimpleDateFormat("yyyy");
Calendar c = new GregorianCalendar();
c.setFirstDayOfWeek(Calendar.SUNDAY);
c.setTime(date);
c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek()+6); // Sunday
if(!sd.format(date).equals(sd.format(c.getTime()))){
c.setTime(date);
}
return c.getTime();
}
public static Date getFirstDayOfWeek(Date date) {
SimpleDateFormat sd = new SimpleDateFormat("yyyy");
Calendar c = new GregorianCalendar();
c.setFirstDayOfWeek(Calendar.SUNDAY);
c.setTime(date);
c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek()); // Sunday
if(!sd.format(date).equals(sd.format(c.getTime()))){
c.setTime(date);
}
return c.getTime();
}
public static int getDayOfWeek(Date date) {
Calendar c = new GregorianCalendar();
c.setFirstDayOfWeek(Calendar.SUNDAY);
c.setTime(date);
//c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek() + 6); // Sunday
return c.get(Calendar.DAY_OF_WEEK);
}
}
HNFDCommon 類中：
public static String getWeek(Date date)
{
String rtn="";
int year;
int week;
SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd");
Calendar cd = Calendar.getInstance();
cd.setTime(date);
year=cd.get(Calendar.YEAR);
week = cd.get(Calendar.WEEK_OF_YEAR);
//System.out.println("ttt"+sd.format(cd.getTime())+"bbb"+week);
int vmonth = cd.get(Calendar.MONTH)+1;
if(week == 1 vmonth == 12){
cd.add(Calendar.WEEK_OF_YEAR,-1);
week =cd.get(Calendar.WEEK_OF_YEAR)+1;
}
if(week 6 vmonth == 1){
year--;
}
if(week 10){
rtn=year+"00"+week;
}
else{
rtn=year+"0"+week;
}
return rtn;
}
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