Java StringTokenizerBelongs to the java.util package, used to split strings.
StringTokenizer constructor methods:
- 1. StringTokenizer(String str): Constructs a StringTokenizer object for parsing str. Java's default delimiters are space (""), tab (\t), newline (\n), carriage return (\r).
- 2. StringTokenizer(String str, String delim): Constructs a StringTokenizer object for parsing str, and provides a specified delimiter.
- 3. StringTokenizer(String str, String delim, boolean returnDelims): Constructs a StringTokenizer object for parsing str, provides a specified delimiter, and specifies whether to return delimiters.
StringTokenizer common methods:
- 1. int countTokens(): Returns the number of times the nextToken method has been called.
- 2. boolean hasMoreTokens(): Returns whether there are more delimiters.
- 3. boolean hasMoreElements(): Determines whether the enumeration (Enumeration) object still has data.
- 4. String nextToken(): Returns the string from the current position to the next delimiter.
- 5. Object nextElement(): Returns the next element of the enumeration (Enumeration) object.
- 6. String nextToken(String delim): Similar to 4, returns the result using the specified delimiter.
Example 1
import java.util.*;
public class Main
{
public static void main(String[] args)
{
String str = "example,google,taobao,facebook,zhihu";
//Use the comma (,) as the delimiter to split the string
StringTokenizer st=new StringTokenizer(str,",");
while(st.hasMoreTokens()) {
System.out.println(st.nextToken());
}
}
}
The output is:
example google taobao facebook zhihu
Example 2
import java.util.*;
public class Main
{
public static void main(String args[])
{
System.out.println("Using the first constructor:");
StringTokenizer st1 = new StringTokenizer("Hello Example How are you", " ");
while (st1.hasMoreTokens())
System.out.println(st1.nextToken());
System.out.println("Using the second constructor:");
StringTokenizer st2 = new StringTokenizer("JAVA : Code : String", " :");
while (st2.hasMoreTokens())
System.out.println(st2.nextToken());
System.out.println("Using the third constructor:");
StringTokenizer st3 = new StringTokenizer("JAVA : Code : String", " :", true);
while (st3.hasMoreTokens())
System.out.println(st3.nextToken());
}
}
The output is:
使用第一种构造函数： Hello Example How are you 使用第二种构造函数： JAVA Code String 使用第三种构造函数： JAVA : Code : String