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
Search a string for the first occurrence of "planet": StringmyStr="Hello planet earth, you are a great planet.";System.out.println(myStr.indexOf("planet")); Try it Yourself » Definition and Usage TheindexOf()method returns the position of the first occurrence of specified character(s)...
Find the position of an item in a list: import java.util.LinkedList; public class Main { public static void main(String[] args) { LinkedList<String> cars = new LinkedList<String>(); cars.add("Volvo"); cars.add("BMW"); cars.add("Ford"); cars.add("Mazda"); System.out.println(car...
The index of 'o' starting from index 5 is: 7 1. 4.indexOf方法的注意事项 在使用indexOf方法时需要注意以下几点: 如果要查找的字符或字符串不存在于目标字符串中,indexOf方法将返回-1。 如果要查找的字符或字符串在目标字符串中多次出现,indexOf方法将返回第一次出现的索引位置。 如果要查找的字符或字符...
Java中String类下indexOf方法的使用 str.indexOf(String substr); 用来查询str中字符substr的位置,起始位置为0,若str中不存在substr,则返回-1 。 例: publicclassTest1 { publicstaticvoidmain(String[] args) { //TODO Auto-generated method stub String str = "1234567890";...
JavaObjectArray<T> Constructors Properties Methods Clear CopyTo DisposeUnlessReferenced GetEnumerator IndexOf JavaObjectExtensions JavaPeerableExtensions JavaPrimitiveArray<T> JavaSByteArray JavaSingleArray JavaTypeParametersAttribute JniAddNativeMethodRegistrationAttribute ...
JAVASByteArray JAVASByteArray 建構函式 方法 清除 CopyFrom CopyTo CreateMarshaledValue GetElements IndexOf JAVASingleArray JAVATypeParametersAttribute JniAddNativeMethodRegistrationAttribute JniArgumentValue JniArrayElements JniBooleanArrayElements JniCharArrayElements JniDoubleArrayElements JniEnvironment JniEnvironme...
Java.Awt.Font Java.Beans Java.Interop Java.Interop.Expressions Java.Interop.Tools.JavaCallableWrappers Java.IO Java.Lang Java.Lang AbstractMethodError AbstractStringBuilder ArithmeticException ArrayIndexOutOfBoundsException ArrayStoreException AssertionError Boolean BootstrapMethodError Byte Character Character.Subset...
选中一段代码,单击右键选中菜单中的Refactor,右侧会出现很多可选的重构选项。这个功能实在太棒了,代码重构过程变得轻松了很多。我目前最常用的两个重构功能就是:提取方法(Extract Method)、内联变量(Inline Parameter)。更多功能可以自己试试看,参考下面截图:
String str1 ="Java is fun";intresult;// getting index of character 's' result = str1.indexOf('s'); System.out.println(result); } }// Output: 6 Syntax of indexOf() The syntax of the StringindexOf()method either string.indexOf(intch,intfromIndex) ...