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  • JAVA (StringBuffer/StringBuilder)常用API

     1 public class Copy3 {
     2 
     3     public static void main(String[] args) {
     4         //构造实例化
     5         StringBuffer strbu = new StringBuffer("hello world	");
     6         char[] a = {'l','o','y','o','u'};
     7         //调用方法
     8         
     9         System.out.println(1+"	"+strbu.append(true));            //append(boolean b);
    10         System.out.println(2+"	"+strbu.append('a'));            //append(char b);
    11         System.out.println(3+"	"+strbu.append(a));                //append(char[] b);
    12         System.out.println(4+"	"+strbu.capacity());            //capacity();
    13         System.out.println(5+"	"+strbu.charAt(10));            //charAt(int index);
    14         System.out.println(6+"	"+strbu.delete(3, 9));            //delete(int start, int end);
    15         System.out.println(7+"	"+strbu.insert(5, false));        //insert(int offset, boolean b);
    16         System.out.println(8+"	"+strbu.substring(7));            //substring(int start)
    17         System.out.println(9+"	"+strbu.reverse() );            //reverse() 
    18         
    19     }
    20 
    21 }

    运行结果

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  • 原文地址:https://www.cnblogs.com/-maji/p/7123248.html
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