Unless otherwise noted, passing a null argument to a constructor or method in this class will cause a NullPointerException to be thrown. As of release JDK 5, this class has been supplemented with an equivalent class designed for use by a single thread, StringBuilder. The StringBuilder class sh...
Returns a string representing the data in this sequence. void trimToSize() Attempts to reduce storage used for the character sequence. Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait Methods inherited from interface ...
Methods in java.lang that return StringBuffer Modifier and TypeMethod and Description StringBuffer StringBuffer.append(boolean b) StringBuffer StringBuffer.append(char c) StringBuffer StringBuffer.append(char[] str) StringBuffer StringBuffer.append(char[] str, int offset, int len) StringBuff...
publicclassTest{publicstaticvoidmain(String[] args){StringBuffersb=newStringBuffer("YuZhen Feng");//增sb.append("nb"); System.out.println(sb);//YuZhen Fengnb//删sb.delete(2,6);//删除位置在[2,6)上的字符System.out.println(sb);//Yu Fengnbsb.deleteCharAt(1);//删除位置在1上的字符System...
Method Summary Methods inherited from class java.lang.Object clone,finalize,getClass,notify,notifyAll,wait,wait,wait 3.StringBuffer类的方法 Method Summary Methods inherited from class java.lang.Object clone
String类在Java中是不可变的吗?为什么? 概要 String、StringBuffer、StringBuilder是常用的字符序列,从源码上对比下,三者的区别 类结构 String StringBuffer StringBuilder 都实现了interface CharSequence,interface Comparable<T>,interface Serializable StringBuilder,StringBuffer继承了abstract class AbstractStringBuilder Cha...
一、Java String 类——String字符串常量 字符串广泛应用 在Java编程中,在 Java 中字符串属于对象,Java 提供了String 类来创建和操作字符串。 需要注意的是,String的值是不可变的,这就导致每次对String的操作都会生成新的String对象,这样不仅效率低下,而且大量浪费有限的内存空间。我们来看一下这张对String操作时内...
public ActionResult callOauthService(String serviceUrl, String accessToken, String jsonBody, HttpMethod httpMethod) 此函数用于客户端调用api服务中的Oauth服务接口,serviceUrl是服务地址(需要注意此地址不需要传递api服务的前缀(http://***),请直接传递如(/open_api/***)),accessToken是令牌信息,jsonBody是接...
以下程序说明了java.lang.StringBuffer.subSequence()方法: 示例1: // Java program to demonstrate// the subSequence() Method.classGFG{publicstaticvoidmain(String[]args){// create a StringBuffer object// with a String pass as parameterStringBufferstr=newStringBuffer("WelcomeGeeks");// print string...
Java.IO Java.Lang Java.Lang AbstractMethodError AbstractStringBuilder ArithmeticException ArrayIndexOutOfBoundsException ArrayStoreException AssertionError Boolean BootstrapMethodError Byte Character Character.Subset Character.UnicodeBlock Character.UnicodeScript CharSequenceConsts Class ClassCastException ClassCircularityErro...