strbuff.java

java中的stringbuffer测试

public class StrBuff{
	public static void main(String[] args){
		StringBuffer buf = new StringBuffer();
		System.out.println(buf + "  " + buf.length());
		buf.append("asdl;kfj");
		System.out.println(buf + "  " + buf.length());
		buf.insert(3, "Fuck");
		System.out.println(buf + "  " + buf.length());
		System.out.println(buf.charAt(0) + "" + buf.charAt(3));
		buf.replace(0, 3, "Fuck");
		System.out.println(buf + "  " + buf.length());
		buf.reverse();
		System.out.println(buf + "  " + buf.length());
	}
}