ï»??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲九九爱视频,亚洲欧洲免费视频,深夜影院在线观看http://www.aygfsteel.com/yemoo/category/12196.htmlJava技术修ç‚ég¸­...zh-cnFri, 02 Mar 2007 07:40:23 GMTFri, 02 Mar 2007 07:40:23 GMT60数组对象getChars()æ–ÒŽ³•çš„ä‹Éç”?/title><link>http://www.aygfsteel.com/yemoo/archive/2006/07/12/57756.html</link><dc:creator>Yemoo'S Java Blog</dc:creator><author>Yemoo'S Java Blog</author><pubDate>Wed, 12 Jul 2006 02:41:00 GMT</pubDate><guid>http://www.aygfsteel.com/yemoo/archive/2006/07/12/57756.html</guid><wfw:comment>http://www.aygfsteel.com/yemoo/comments/57756.html</wfw:comment><comments>http://www.aygfsteel.com/yemoo/archive/2006/07/12/57756.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/yemoo/comments/commentRss/57756.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/yemoo/services/trackbacks/57756.html</trackback:ping><description><![CDATA[java数组对象有一个很重要的方法getChars();其方法描˜qîCØ“:<br /><br />public void getChars(int srcBegin,int srcEnd,char dst[],int dstBegin);  ž®†å½“前字½W¦ä¸²çš„部分字½W¦å¤åˆ¶åˆ°ç›®æ ‡è‡ªè´Ÿæ•°ç»„dstä¸?从srcBegin(包含在内)到srcEnd(不包含在å†?之间的字½W¦å¤åˆ¶åˆ°ç›®æ ‡å­—符数组中的字符从dstBegin位置开始存æ”?<br /><br />使用实例:<br /><div style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><span style="COLOR: #000000">String ss</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">Visual Basic</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">;<br /></span><span style="COLOR: #0000ff">char</span><span style="COLOR: #000000"> dst[]</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">{</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">a</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">,</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">b</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">,</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">c</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">,</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">d</span><span style="COLOR: #000000">'</span><span style="COLOR: #000000">};<br /><br />ss.getChars(</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">,</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">,dst,</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">);<br />System.out.println(dst);</span></div>输出¾l“果为abal;<br /><br />注意数组参数只要写入数组名即å?不要带[],输出可以直接用数¾l„名输出全部内容.<img src ="http://www.aygfsteel.com/yemoo/aggbug/57756.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/yemoo/" target="_blank">Yemoo'S Java Blog</a> 2006-07-12 10:41 <a href="http://www.aygfsteel.com/yemoo/archive/2006/07/12/57756.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>æ ÒŽ®ç”¨æˆ·è¾“入判断癑ֈ†åˆ¶æˆ¾l©å¯¹åº”ç­‰¾U?/title><link>http://www.aygfsteel.com/yemoo/archive/2006/07/10/57414.html</link><dc:creator>Yemoo'S Java Blog</dc:creator><author>Yemoo'S Java Blog</author><pubDate>Sun, 09 Jul 2006 17:22:00 GMT</pubDate><guid>http://www.aygfsteel.com/yemoo/archive/2006/07/10/57414.html</guid><wfw:comment>http://www.aygfsteel.com/yemoo/comments/57414.html</wfw:comment><comments>http://www.aygfsteel.com/yemoo/archive/2006/07/10/57414.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/yemoo/comments/commentRss/57414.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/yemoo/services/trackbacks/57414.html</trackback:ping><description><![CDATA[ <div style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"> <span style="COLOR: #0000ff">import</span> <span style="COLOR: #000000"> java.io.</span> <span style="COLOR: #000000">*</span> <span style="COLOR: #000000">;<br /><br /></span> <span style="COLOR: #0000ff">public</span> <span style="COLOR: #000000"> </span> <span style="COLOR: #0000ff">class</span> <span style="COLOR: #000000"> GradeLevel{<br />    </span> <span style="COLOR: #0000ff">public</span> <span style="COLOR: #000000"> </span> <span style="COLOR: #0000ff">static</span> <span style="COLOR: #000000"> </span> <span style="COLOR: #0000ff">void</span> <span style="COLOR: #000000"> main(String args[]) </span> <span style="COLOR: #0000ff">throws</span> <span style="COLOR: #000000"> IOException{<br />        BufferedReader keyin</span> <span style="COLOR: #000000">=</span> <span style="COLOR: #0000ff">new</span> <span style="COLOR: #000000"> BufferedReader(</span> <span style="COLOR: #0000ff">new</span> <span style="COLOR: #000000"> InputStreamReader(System.in));<br />        String x;<br />        </span> <span style="COLOR: #0000ff">int</span> <span style="COLOR: #000000"> y,n;<br />        System.out.println(</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">误‚¾“入一个成¾l?</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">);<br />        x</span> <span style="COLOR: #000000">=</span> <span style="COLOR: #000000">keyin.readLine();    </span> <span style="COLOR: #008000">//</span> <span style="COLOR: #008000">è¯Õd–一个字½W¦ä¸²</span> <span style="COLOR: #008000"> <br /> </span> <span style="COLOR: #000000">        y</span> <span style="COLOR: #000000">=</span> <span style="COLOR: #000000">Integer.parseInt(x);    </span> <span style="COLOR: #008000">//</span> <span style="COLOR: #008000">ž®†è¾“入的字符串x转换成整型数据y</span> <span style="COLOR: #008000"> <br /> </span> <span style="COLOR: #000000">        n</span> <span style="COLOR: #000000">=</span> <span style="COLOR: #000000">(</span> <span style="COLOR: #000000">99</span> <span style="COLOR: #000000">-</span> <span style="COLOR: #000000">y)</span> <span style="COLOR: #000000">/</span> <span style="COLOR: #000000">10</span> <span style="COLOR: #000000">+</span> <span style="COLOR: #000000">1</span> <span style="COLOR: #000000">;<br />        <br />        </span> <span style="COLOR: #0000ff">switch</span> <span style="COLOR: #000000">(n){<br />            </span> <span style="COLOR: #0000ff">case</span> <span style="COLOR: #000000"> </span> <span style="COLOR: #000000">1</span> <span style="COLOR: #000000">:System.out.println(</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">A</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">);</span> <span style="COLOR: #0000ff">break</span> <span style="COLOR: #000000">;<br />            </span> <span style="COLOR: #0000ff">case</span> <span style="COLOR: #000000"> </span> <span style="COLOR: #000000">2</span> <span style="COLOR: #000000">:System.out.println(</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">B</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">);</span> <span style="COLOR: #0000ff">break</span> <span style="COLOR: #000000">;<br />            </span> <span style="COLOR: #0000ff">case</span> <span style="COLOR: #000000"> </span> <span style="COLOR: #000000">3</span> <span style="COLOR: #000000">:System.out.println(</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">C</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">);</span> <span style="COLOR: #0000ff">break</span> <span style="COLOR: #000000">;<br />            </span> <span style="COLOR: #0000ff">case</span> <span style="COLOR: #000000"> </span> <span style="COLOR: #000000">4</span> <span style="COLOR: #000000">:System.out.println(</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">D</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">);</span> <span style="COLOR: #0000ff">break</span> <span style="COLOR: #000000">;<br />            </span> <span style="COLOR: #0000ff">default</span> <span style="COLOR: #000000">:System.out.println(</span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">不及æ ?/span> <span style="COLOR: #000000">"</span> <span style="COLOR: #000000">);<br />        }<br />    }<br />}</span> </div> <br />要注意以下两个问é¢?<br />1,建立输入‹¹çš„¾cÕd:BufferedReader而不是BufferReader,不要ž®‘写了ed.然后在BufferedReadereizhong建立InputStreamReader¾c?最后可以调用system.inçš„realLineæ–ÒŽ³•è¯Õd…¥ä¸€è¡Œæ•°æ?<br />2,ž®†ç™¾åˆ†åˆ¶è½¬æ¢æˆä¸Ž1.2.3.4与其他等5¿Uæƒ…å†ëŠš„½Ž€å•å…¬å¼?(99-y)/10+1;<img src ="http://www.aygfsteel.com/yemoo/aggbug/57414.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/yemoo/" target="_blank">Yemoo'S Java Blog</a> 2006-07-10 01:22 <a href="http://www.aygfsteel.com/yemoo/archive/2006/07/10/57414.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>判断òq´ä†¾æ˜¯å¦é—°å¹´çš„一个applet½E‹åºhttp://www.aygfsteel.com/yemoo/archive/2006/07/09/57394.htmlYemoo'S Java BlogYemoo'S Java BlogSun, 09 Jul 2006 15:49:00 GMThttp://www.aygfsteel.com/yemoo/archive/2006/07/09/57394.htmlhttp://www.aygfsteel.com/yemoo/comments/57394.htmlhttp://www.aygfsteel.com/yemoo/archive/2006/07/09/57394.html#Feedback2http://www.aygfsteel.com/yemoo/comments/commentRss/57394.htmlhttp://www.aygfsteel.com/yemoo/services/trackbacks/57394.html
import java.applet.*;
import java.awt.*;
import java.awt.event.*;

public class LeapyearTest extends Applet implements ActionListener{
    Label result;   //定义一个输出结果的标签对象
    TextField t1;   //定义一个用于输入年份的文本�/span>
    Button btn; //定义一个button对象
    
    int year;
    boolean leap;
    
    public void init(){
        result=new Label("误‚¾“入要判断的年ä»?");
        t1=new TextField(5);
        btn=new Button("判断");
        
        add(t1);
        add(btn);
        add(result);
        
        btn.addActionListener(this);    //为按钮注册事ä»?事äšg的监听者äؓ当前¾cȝš„对象this
    }
    
    public void actionPerformed(ActionEvent e){
        year=Integer.parseInt(t1.getText());
        
        if((year%4==0)&&(year%100!=0)){
            leap=true;
        }else if(year%400==0){
            leap=true;
        }else{
            leap=false;
        }
        
        if(leap==true){
            result.setText("你输入的òq´ä†¾ä¸ºé—°òq?");
        }else{
            result.setText("你输入的òq´ä†¾ä¸æ˜¯é—°å¹´!");
        }
        
        t1.setText("");
    }
}

˜q™é‡Œæœ‰å‡ ç‚šwœ€è¦è¯´æ˜Žçš„:
1,applet½E‹åºå¿…须引入java.applet.*;
2,使用文本æ¡?按钮½{‰æŽ§ä»‰™œ€è¦å¼•å…¥java.awt.*;
3,有事件发生则要引入java.awt.event.*;
4,在类名后加上extends Applet Implements ActionListener
5,æ·ÕdŠ äº‹äšgå?当事件被‹È€‹zÕdŽä¼šè‡ªåŠ¨è°ƒç”¨actionPerformed函数执行.因此应该ä¸ÞZº‹ä»¶å†™è¯¥å‡½æ•?

Yemoo'S Java Blog 2006-07-09 23:49 发表评论
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