StringBuffer delete()、deleteCharAt()方法

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public class DeleteDemo {public static void main(String[] args) {      StringBuffer buff = new StringBuffer("It's not cool");    System.out.println("buffer = " + buff);     // deleting character from index 5 to index 9    buff.delete(5, 9);    System.out.println("After deletion = " + buff);    buff = new StringBuffer("abcd");    System.out.println("buffer = " + buff);    // deleting character at index 2    buff.deleteCharAt(2);    System.out.println("After deletion = " + buff);        buff = new StringBuffer("abcd");    System.out.println("buffer = " + buff);    // 删除最后一个字符    buff.deleteCharAt(buff.length()-1);    System.out.println("After deletion = " + buff);  }}

运行程序,结果为

buffer = It's not coolAfter deletion = It's coolbuffer = abcdAfter deletion = abdbuffer = abcdAfter deletion = abc


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