本学期面向对象与Java程序设计课程已经结束了,给自己学习来个总结。
本学期过的非常快,不得不说这一学期学到的东西很少,感觉自己的进步很小。
而且感觉自己总少了点什么,在写这篇总结前,我认真想了,很多时间浪费了。
有的时候甚至不知道自己在干嘛,,每当要写总结的时候,又没怎么学习。
希望自己不要再浪费时间了,可以在大学学会更多的知识,成为那个最好的自己。
每周总结汇总:
写过的代码节选:
记事本:
代码:
package dome1;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;
public class JKQ implements ActionListener {
JFrame frame;
JMenuBar bar;
JMenu fileMenu,editMenu;
JMenuItem newItem,openItem,saveItem,closeItem;
ImageIcon newIcon,openIcon,saveIcon,closeIcon;
JScrollPane scorll;
JTextArea area;
File file;
private JFileChooser chooser;
public JKQ(){
frame = new JFrame("小本本");
bar = new JMenuBar();
fileMenu = new JMenu("文件");
editMenu = new JMenu("编辑");
newItem = new JMenuItem("新建(N)",newIcon);
openItem = new JMenuItem("打开(O)",openIcon);
saveItem = new JMenuItem("另存为(A)",saveIcon);
closeItem = new JMenuItem("关闭(X)",closeIcon);
newIcon = new ImageIcon("d:"+File.separator+"新建.png");
openIcon = new ImageIcon("D:"+File.separator+"打开.png");
saveIcon = new ImageIcon("D:"+File.separator+"另存为.png");
closeIcon = new ImageIcon("D:"+File.separator+"关闭.png");
area = new JTextArea();
scorll = new JScrollPane(area);
newItem.setMnemonic(KeyEvent.VK_N);
openItem.setMnemonic(KeyEvent.VK_O);
saveItem.setMnemonic(KeyEvent.VK_A);
closeItem.setMnemonic(KeyEvent.VK_X);
fileMenu.add(newItem);
fileMenu.add(openItem);
fileMenu.add(saveItem);
fileMenu.addSeparator();
fileMenu.add(closeItem);
newItem.addActionListener(this);
openItem.addActionListener(this);
saveItem.addActionListener(this);
closeItem.addActionListener(this);
bar.add(fileMenu);
bar.add(editMenu);
frame.setJMenuBar(bar);
frame.add(scorll);
frame.setSize(666, 333);
frame.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
Object obj = e.getSource();
if (obj instanceof JMenuItem) {
JMenuItem item = (JMenuItem) obj;
if (item == newItem) {
new JKQ();
}else if (item == openItem) {
chooser = new JFileChooser();
chooser.showOpenDialog(null);
file = chooser.getSelectedFile();
}
}
}
}
package dome1;
public class TEST {
public static void main(String[] args) {
new JKQ();
}
}
实验代码:
package Java11;
class MyThread implements Runnable{
private int ticket = 1000;
public void run() {
for(int i = 0; i < 1000; i++) {
this.sale();
if(i == Math.sqrt(i) * Math.sqrt(i)) {
Thread.currentThread().yield();
}
}
}
public synchronized void sale() {
if(ticket > 0) {
try {
Thread.currentThread().sleep(1000);
}catch(InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName()+"卖票:ticket="+ticket--);
}
}
}
package Java11;
public class 测试类 {
public static void main (String args[]) {
MyThread my = new MyThread();
Thread my1 = new Thread(my);
my1.setName("窗口1");
Thread my2 = new Thread(my);
my2.setName("窗口2");
Thread my3 = new Thread(my);
my3.setName("窗口3");
Thread my4 = new Thread(my);
my4.setName("窗口4");
Thread my5 = new Thread(my);
my5.setName("窗口5");
Thread my6 = new Thread(my);
my6.setName("窗口6");
Thread my7 = new Thread(my);
my7.setName("窗口7");
Thread my8 = new Thread(my);
my8.setName("窗口8");
Thread my9 = new Thread(my);
my9.setName("窗口9");
Thread my10 = new Thread(my);
my10.setName("窗口10");
my1.start();
my2.start();
my3.start();
my4.start();
my5.start();
my6.start();
my7.start();
my8.start();
my9.start();
my10.start();
}
}
水仙花数:
package dome2;
import java.util.Scanner;
public class shuixianhuashu {
public static void main (String[] args){
Scanner sc =new Scanner(System.in);
int n=sc.nextInt();
int i,a,b,c,d,e,f,g;
if(n==3) {
for(i=100; i<=999;i++) {
a=i/100; //求第一个数
b=(i%100)/10; //第二个数
c=i%10;
if(Math.pow(a, 3)+Math.pow(b, 3)+Math.pow(c, 3) == i) {
System.out.println(i);
}
}
}
else if(n==4) {
for(i=1000;i<=9999;i++) {
a=i/1000;
b=(i%1000)/100;
c=(i%100)/10; // 1234/100余34,34/10=3;
d=i%10;
if(Math.pow(a, 4)+Math.pow(b, 4)+Math.pow(c, 4)+Math.pow(d,4) == i) {
System.out.println(i);
}
}
}
else if(n==5) {
for(i=10000;i<=99999;i++) {
a=i/10000;
b=(i%10000)/1000;
c=(i%1000)/100; // 12345/1000余345,345/100=3
d=(i%100)/10; // 12345/100=123余45;45/10=4
e=i%10;
if(Math.pow(a, 5)+Math.pow(b, 5)+Math.pow(c, 5)+Math.pow(d,5)+Math.pow(e, 5)== i) {
System.out.println(i);
}
}
}
else if(n==6) {
for(i=100000;i<=999999;i++) {
a=i/100000;
b=(i%100000)/10000;
c=(i%10000)/1000; // 123456除以10000余3456,3456/1000=3;
d=(i%1000)/100; //123456除以1000余456.....
e=(i%100)/10;
f=i%10;
if(Math.pow(a, 6)+Math.pow(b, 6)+Math.pow(c, 6)+Math.pow(d,6)+Math.pow(e, 6)+Math.pow(f, 6)== i) {
System.out.println(i);
}
}
}
else if(n==7) {
for(i=1000000;i<=9999999;i++) {
a=i/1000000;
b=(i%1000000)/100000;
c=(i%100000)/10000;
d=(i%10000)/1000;
e=(i%1000)/100;
f=(i%100)/10;
g=i%10;
if(Math.pow(a, 7)+Math.pow(b, 7)+Math.pow(c, 7)+Math.pow(d,7)+Math.pow(e, 7)+Math.pow(f, 7)+Math.pow(g, 7)== i) {
System.out.println(i);
}
}
}
}
}