Java开发(1) - 正则表达式

 带附件：JAVA正则表达式详解（书籍）

package com.tests; 
import java.util.regex.Matcher; 
import java.util.regex.Pattern; 
import org.junit.Test; 

public class TestPatternMatcher { 

@Test 
public void TestReplaceAll(){ 
String s="Hello World ..."; 

String s2=s.replaceAll("\\.", ""); 
System.out.println(s2); 

String s3=s.replaceAll("\\S", ""); 
System.out.println(s3); 

String sLineSep = System.getProperty("line.separator"); 
String s4 = "abcdefg" + sLineSep + "中国"; 
System.out.println(s4); 
System.out.println(s4.replace(sLineSep, "换行")); 

String s5 = "1985-01-17，在这个日期23423-2384-出生"; 
Pattern pattern = Pattern.compile("\\d+"); 
Matcher m = pattern.matcher(s5); 
while(m.find()){ 
System.out.println(m.group()+"["+m.start()+"]-["+m.end()+"]"); 
} 


String s6="just do do do do it~!123abc@@1234efg "; 
// Pattern pdo=Pattern.compile("do\\s(do\\s)+"); 
Pattern pdo=Pattern.compile("\\d+(\\w+)"); 
Matcher mdo = pdo.matcher(s6); 
while (mdo.find()) { 
for (int i = 0; i < mdo.groupCount(); i++) { 
// System.out.println(mdo.group() + "[" + mdo.start() + "]-[" 
// + mdo.end() + "]"); 
System.out.println(i+":"+mdo.group(i)); 
} 
} 

} 

@Test 
public void testGreedy(){ 
String html = "<table> <tr><td>123ksdjfsld</td><td>34243kdljsfkldsf</td>kdlfjsdf</tr></table"; 
Matcher m = Pattern.compile("<td>((\\d+)(\\w+)</td>").matcher(html); 
while(m.find()){ 
int cnt = m.groupCount(); 
System.out.println(cnt); 
for(int i=0;i<=cnt;i++){ 
System.out.println("group" + i + ":" + m.group(i)); 
} 
} 
} 

@Test 
public void testGreedy2(){ 
String html = "klsdjfl8394387592347ksjd"; 
Matcher m = Pattern.compile("\\d+?").matcher(html); while(m.find()){ 
System.out.println(m.group()); 
} 
} 
}