Class, Method, and Field Index (Java in a Nutshell)David Flanagan
示例1:查找字符在字符串中的索引位置 Stringstr="Hello World";intindex=str.indexOf('W');System.out.println("The index of 'W' in the string is: "+index); 1. 2. 3. 输出结果为: The index of 'W' in the string is: 6 1. 示例2:从指定索引位置开始查找字符在字符串中的索引位置 Strings...
TheindexOf()method returns the position of the first occurrence of a value in the list. If the item is not found in the list then it returns -1. Syntax publicintindexOf(Objectitem) Parameter Values ParameterDescription itemRequired. The item to search for in the list. ...
而out就是System里面的一个数据成员(也称为字段),但这个成员不是基本类,而是java.io.PrintStream类的对象,java.io.PrintStream类有些什么方法等一下再说。我们先看看下面的截图,被关键字static修饰的数据成员或方法可以直接通过"类名.数据成员"或"类名.方法"来引用,而无须先建立对象(C++中也是这样)。所以System.o...
StringBuilder.IndexOf Method Reference Feedback Definition Namespace: Java.Lang Assembly: Mono.Android.dll Overloads 展開資料表 IndexOf(String, Int32) Searches for the index of the specified character. IndexOf(String) Searches for the first index of the specified character. ...
JavaArray<T> JavaArray<T> 屬性 方法 Clear Contains CopyTo GetEnumerator IndexOf ToArray 明確介面實作 JavaBooleanArray JavaCharArray JavaDoubleArray JavaException JavaInt16Array JavaInt32Array JavaInt64Array JavaInterfaceDefaultMethodAttribute JavaLibraryReferenceAttribute JavaObject JavaObjectArray<T> JavaObj...
Tip:Use thelastIndexOfmethod to return the position of thelastoccurrence of specified character(s) in a string. Syntax One of the following: publicintindexOf(Stringstr) publicintindexOf(Stringstr,intfromIndex) publicintindexOf(intchar)
JavaInt32Array JavaInt32Array Constructors Methods Clear CopyFrom CopyTo CreateMarshaledValue GetElements IndexOf JavaInt64Array JavaInterfaceDefaultMethodAttribute JavaLibraryReferenceAttribute JavaObject JavaObjectArray<T> JavaObjectExtensions JavaPeerableExtensions JavaPrimitiveArray<T> JavaSByteArray JavaSingle...
Java.util.ArrayList class method indexOf(Object o) is used to find out the index of a particular element in a list. Method indexOf() Signature public int indexOf(Object o) This method returns -1 if the specified element is not present in the list. ArrayL
Objects.CheckFromToIndex MethodReference Feedback DefinitionNamespace: Java.Util Assembly: Mono.Android.dll OverloadsProširi tabelu CheckFromToIndex(Int32, Int32, Int32) Checks if the sub-range from fromIndex (inclusive) to toIndex (exclusive) is within the bounds of range from 0 (...