1、添加字符
public class StringBufferDemo {
public static void main(String args[])
{
StringBuffer sbf = new StringBuffer();
sbf.append("hello world");
fun(sbf);
for(int i =0; i < 100; i++)
{
sbf.append(i);
}
System.out.println(sbf);
}
public static void fun(StringBuffer b)
{
b.append(" ").append("\r\n");
}
}
2,、追加字符
public class StringBufferDemo2 {
public static void main(String args[])
{
StringBuffer sbf = new StringBuffer();
sbf.append("hello world");
sbf.insert(1, "-gaga-");
sbf.insert(0, "/wiki/");
System.out.println(sbf);
}
}
3，删除字符
public class StringBufferDemo3 {
public static void main(String args[])
{
StringBuffer sbf = new StringBuffer();
sbf.append("omganggangstyle");
sbf.delete(0, 10);
System.out.println(sbf);
}
}
4、字符反转
public class StringBufferDem4 {
public static void main(String args[])
{
StringBuffer sbf = new StringBuffer();
sbf.append("hello world");
System.out.println(sbf.reverse());
}
}