记录一些常用的字符串操作方法(java)

public class TestReplaceString 
{
	public static void main(String[] args)
	{
		String a = new String("aaa<br>bbb<br>ccc");
		System.out.println(a);
		String b = a.replace("<br>", "\n");
		//String b = a.replaceAll("<br>", "\n");
		System.out.println(b);
	}
}

public class test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String s = "http://localhost:8080/Blog/article.do?messageId=16";
		System.out.println(new test().getLastPageNameRemovePath(s));
	}
	
	public String getLastPageNameRemovePath(String ss)
	{
		int pos = ss.lastIndexOf("/");
		ss = ss.substring(pos);
		return ss;
	}
}

public class TestStringOperator {

	/**
	 * @param args
	 */
	public static void main(String[] args) 
	{
		// TODO Auto-generated method stub
		String s = new String("abcd.jpg");
		String suffix = new TestStringOperator().getFileSuffix(s);
		System.out.println("后缀名 = "+suffix);
		
		String s2 = new String("jakarta-tomcat-5.5.7\\webapps\\BlogJavaBean\\index.jsp");
		s2 = new TestStringOperator().getSubStrRealPath(s2);
		System.out.println("realpath = "+s2);
		
		String s3 = new String("D:\\jakarta-tomcat-5.5.7\\webapps\\BlogJavaBean\\images\\header\\施文俊");
		s3 = new TestStringOperator().getUserHeadImg(s3);
		System.out.println("s3.indexOf[images\\header] = "+s3);
		
		String s4 = new String("D:\\jakarta-tomcat-5.5.7\\webapps\\BlogJavaBean\\images\\header\\施文俊");
		s4 = new TestStringOperator().getUserHeadImg(s4);
		s4 = s4.replace('\\', '/');
		System.out.println("s4.replace[images\\header] = "+s4);
		
		String s5 = new String("/BlogJavaBean/no_name_one.jsp?messageId=6");
		s5 = new TestStringOperator().getLastPageNameRemovePath(s5);
		System.out.println("s5 = s5.substring(pos) = "+s5);
	}
	
	
	public String getLastPageNameRemovePath(String ss)
	{
		int pos = ss.lastIndexOf("/");
		ss = ss.substring(pos);
		return ss;
	}
	
	public String getUserHeadImg(String ss)
	{
		int pos = ss.indexOf("images\\header");
		ss = ss.substring(pos);
		return ss;
	}
	
	public String getFileSuffix(String fileName)
	{
		int pos = fileName.indexOf(".");
		fileName = fileName.substring(pos);
		return fileName;
	}
	
	public String getSubStrRealPath(String scRealPath)
	{
		int pos = scRealPath.lastIndexOf("\\");
		scRealPath = scRealPath.substring(0, pos+1);
		return scRealPath;
	}

}