StringTokenizer类 实用小程序

该程序可以实现:输入一串句子,将句子分解为单个的语言单元

import java.util.*;
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
public class TokenTest extends JFrame
{
	private JLabel promptLabel;
	private JTextField inputField;
	private JTextArea outputArea;
	public TokenTest()
	{
		super("Testing Class StringTokenizer");
		Container container= getContentPane();
		container.setLayout(new FlowLayout());
		promptLabel =new JLabel("请输入一个句子并按下回车键");
		container.add(promptLabel);
		inputField =new JTextField(20);
		inputField.addActionListener(
				new ActionListener() {
					public void actionPerformed(ActionEvent event)
					{
						StringTokenizer tokens=new StringTokenizer(event.getActionCommand());
						outputArea.setText("Number of elements: "+tokens.countTokens()+"\nThe tokens are:\n");
						while(tokens.hasMoreTokens())
							outputArea.append(tokens.nextToken()+"\n");
					}
				}
		);
		container.add(inputField);
		outputArea=new JTextArea(10,20);
		outputArea.setEditable(false);
		container.add(new JScrollPane(outputArea));
		setSize(275,240);
		setVisible(true);
	}
	public static void main(String[]args)
	{
		TokenTest application=new TokenTest();
		application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}

package lsy; import java.util.StringTokenizer; /** * * @author lushuaiyin * */ public class StringTokenizerTest { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub String ivrdata="v1|v2|你好|哈哈"; getTokenizer1(ivrdata); System.out.println("----------------------------------"); getTokenizer2(ivrdata); System.out.println("----------------------------------"); getTokenizer2Array(ivrdata,"|"); System.out.println("----------------------------------"); String ssss="y1 y2 split实现 哈哈"; String[] strarr=getTokenizer2Array(ssss,""); } public static void getTokenizer1(String str){ StringTokenizer st = new StringTokenizer(str, "|",true); System.out.println("countTokens:"+st.countTokens()); int j=0; while(st.hasMoreTokens()){ System.out.println(j+":"+st.nextToken()); j++; } } public static void getTokenizer2(String str){ StringTokenizer st = new StringTokenizer(str, "|",false); System.out.println("countTokens:"+st.countTokens()); int j=0; while(st.hasMoreTokens()){ System.out.println(j+":"+st.nextToken()); j++; } } //////////////split实现////////// public static String[] getTokenizer2Array(String str,String splitStr){ String[] arr=null; if(str==null||str.trim().equals("")){ }else{ if(splitStr==null||splitStr.trim().equals("")){ splitStr=" "; } StringTokenizer st = new StringTokenizer(str, splitStr,false); System.out.println("ArraySize:"+st.countTokens()); arr=new String[st.countTokens()]; int j=0; while(st.hasMoreTokens()){ String temp=st.nextToken(); System.out.println(j+":"+temp); arr[j]=temp; j++; } } return arr; } /*api解释 public StringTokenizer(String str, String delim, boolean returnDelims) str是要处理的字符串; delim是分隔符; returnDelims 是否把分隔符也作为结果返回 (public StringTokenizer(String str, String delim) returnDelims默认false; StringTokenizer(String str)默认分隔符delim是 " \t\n\r\f",returnDelims是false) 遍历的api中注意,hasMoreElements()等于hasMoreTokens(); nextElement()等于nextToken()。可以 看源码验证。 打印: countTokens:7 0:v1 1:| 2:v2 3:| 4:你好 5:| 6:哈哈 ---------------------------------- countTokens:4 0:v1 1:v2 2:你好 3:哈哈 ---------------------------------- ArraySize:4 0:v1 1:v2 2:你好 3:哈哈 ---------------------------------- ArraySize:4 0:y1 1:y2 2:split实现 3:哈哈 */ }
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