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 ...
The methods * are synchronized where necessary so that all the operations on any * particular instance behave as if they occur in some serial order * that is consistent with the order of the method calls made by each of * the individual threads involved. StringBuilder 代码语言:javascript 代码...
2. StringBuffer 源码中注释 * A thread-safe, mutable sequence of characters.*A string buffer is like a {@link String}, but can be modified.*The principal operations on a {@code StringBuffer} are the*{@code append} and {@code insert} methods, which are*overloaded so as to accept data...
官方文档中介绍:StringBuffer 和String在很多时候都是相似的。但是StringBuffer有个最明显的特征:synchronized The principal operations on aStringBufferare theappendandinsertmethods, which are overloaded so as to accept data of any type. StringBuffer中最主要的方法为Append 和Insert方法。 StringBuffer在追加字符...
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...
InputMethods Android.Views.Inspectors Android.Views.TextClassifiers Android.Views.TextService Android.Views.Translation Android.Webkit Android.Widget Android.Widget.Inline Android.Window Dalvik.Annotation Dalvik.Annotation.Optimization Dalvik.Bytecode Dalvik.SystemInterop Java.Awt.Font Java.Beans Java.Interop ...
public class StringMethodsTest { @Test public void test1() { String s1 = " Hello, World! "; System.out.println("字符串的长度是:" + s1.length()); //输出 21 System.out.println("字符串中第四个字符是:" + s1.charAt(4)); //输出 e System.out.println("字符串是否为空?" + s1....
* it is recommended that this class be used in preference to * StringBuffer as it will be faster under most implementations. * * The principal operations on a StringBuilder are the * append and insert methods, which are * overloaded so as to accept data of any type. Each effectively...
Methods Org.Apache.Http.Client.Params Org.Apache.Http.Client.Protocol Org.Apache.Http.Client.Utils Org.Apache.Http.Conn Org.Apache.Http.Conn.Params Org.Apache.Http.Conn.Routing Org.Apache.Http.Conn.Schemes Org.Apache.Http.Conn.Ssl Org.Apache.Http.Conn.Util Org.Apache.Http.Cookie.Params Org....
+4 only because I would go a bit further and make the append and appendLine methods return the instance of string builder itself. That way you could write the concatenation liek this: sb.append("Blah").append("blah"); This would save typing and would looks better :) October 23, 2011...