Java.lang.String.subSequence()方法實例

描述

The java.lang.String.subSequence() method returns a new character sequence that is a subsequence of this sequence.

聲明

Following is the declaration for java.lang.String.subSequence() method

public CharSequence subSequence(int beginIndex, int endIndex)

參數

• beginIndex -- This is the value of begin index, inclusive.

• endIndex -- This is the value of the end index, exclusive.

返回值

This method returns the specified subsequence.

異常

• IndexOutOfBoundsException -- if beginIndex or endIndex are negative, if endIndex is greater than length(), or if beginIndex is greater than startIndex.

實例一

以下例子將告訴你如何使用 java.lang.String.subSequence() method.

package gitbook.net;

import java.lang.*;

public class StringDemo {

  public static void main(String[] args) {
  
    String str = "Tutorials Point!";

    System.out.println("string = " + str);
    
    // returns the specified subsequence from index 2 to 9
    System.out.println("string subsequence = " + str.subSequence(2,9));
  }
}

編譯和執行以上程序，將得到以下的結果：

string = Tutorials Point!
string subsequence = torials

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