1、java.lang.String 2、java.lang.StringBuffer 3、java.lang.StrungBuilder 三者共同之处:都是final类,不允许被继承,主要是从性能和安全性上考虑的,因为这几个类都是经常被使用着,且考虑到防止其中的参数被参数修改影响到其他的应用。 StringBuffer是线程安全,可以不需要额外的同步用于多线程中; StringBuilder是非...
一、使用StringBuffer 类处理字符串 StringBuffer 也可以用来存储字符串,比String 类更高效的存储字符串的一种引用数据类型,特别是对字符串进行连接操作时,使用StringBuffer 类可以大大提高程序的执行效率。 1、使用StringBuffer 类 StringBuffer 类位于java.util包中,是String 类的增强类。 声明StringBuffer 类并初始化...
* Constructs a string builder with no characters in it and an * initial capacity of 16 characters. */publicStringBuilder(){super(16);} 这里对于为什么要在初始化的时候预留一个16个大小的数组还不太明白。 publicAbstractStringBuilderappend(Stringstr){if(str==null)returnappendNull();intlen=str.length...
* Constructs a string buffer with no characters in it and an * initial capacity of 16 characters. */@HotSpotIntrinsicCandidatepublicStringBuffer(){super(16);} 代码语言:javascript 复制 /** * Constructs a string builder with no characters in it and an * initial capacity of 16 characters. */...
public String(StringBuilder builder) Allocates a new string that contains the sequence of characters currently contained in the string builder argument. The contents of the string builder are copied; subsequent modification of the string builder does not affect the newly created string. This cons...
for (int i = 0; i < 5200; i++) { build.append(i + ","); } System.out.println("StingBuilder拼接消耗时间:" + (System.currentTimeMillis() - start3)); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17....
* builder to contain "{@code startle}", whereas * {@code z.insert(4, "le")} would alter the string builder to * contain "{@code starlet}". * * In general, if sb refers to an instance of a {@code StringBuilder}, * then...
Suitebuilder Android.Test.Suitebuilder.Annotation Android.Text Android.Text.Format Android.Text.Method Android.Text.Style Android.Text.Util Android.Transitions Android.Util Android.Util.Proto Android.Views Android.Views.Accessibility Android.Views.Animations Android.Views.Autofill Android.Views.ContentCapture ...
builder microsoft.servicefabric.services.remoting.client microsoft.servicefabric.services.remoting.fabrictransport microsoft.servicefabric.services.remoting.fabrictransport.client microsoft.servicefabric.services.remoting.fabrictransport.runtime microsoft.servicefabric.services.remoting.runtime microsoft.servicefabric....
UriBuilder UriComponents UriCreationOptions UriFormat UriFormatException UriHostNameType UriIdnScope UriKind UriParser UriPartial UriTypeConverter ValueTuple ValueTuple<T1> ValueTuple<T1,T2> ValueTuple<T1,T2,T3> ValueTuple<T1,T2,T3,T4> ValueTuple<T1,T2,T3,T4,T5> ValueTuple<T1,T2,T3,T4,T5,T6>...