String.lastIndexOf(start,value ) 从后向前检索一个子字符串; 参数同上 返回值:在string中的start位置之前,substring第一个值在string中第一次出现的位置。如果没有找到,则返回-1。 var str = 'abcedcbadefghi'; // 此时是从第一位开始往前查找,找不到,返回-1. console.log(str.lastIndexOf('ed',0));...
MySet<String> set = MySet<String>(); set.add("one"); set.add("two"); set.add("three"); set.add("four"); int index = set.getIndex("two"); So at any given moment I can check if a String was already added, and get the index of the string in the set. Is there anythin...
String.class);finalintindex = ArrayIndex.getArrayIndex(primitiveKey);if(index >=0&& index < value.length()) {returnString.valueOf(value.charAt(index));
public static native int getInt(Object array, int index) throws IllegalArgumentException, ArrayIndexOutOfBoundsException; public static native long getLong(Object array, int index) throws IllegalArgumentException, ArrayIndexOutOfBoundsException; public static native float getFloat(Object array, int index...
GetArray(IDictionary<String,Class>) Retrieves the contents of the SQL ARRAY value designated by this Array object. C# Kopiëren [Android.Runtime.Register("getArray", "(Ljava/util/Map;)Ljava/lang/Object;", "GetGetArray_Ljava_util_Map_Handler:Java.Sql.IArrayInvoker, Mono.Android, Version...
示例2: arrayEquals ▲点赞 3▼ importjava.lang.reflect.Array;//导入方法依赖的package包/类/** * Determines whether two arrays are equal by comparing each of their * elements using Object.equals(). */privatestaticbooleanarrayEquals(Object a1, Object a2){intlen;if((len = Array.getLength(a1)...
使用List的get方法时需要防止ArrayIndexOutOfBoundsException异常,这个异常会在请求的索引超过List的大小时抛出。 代码语言:javascript 复制 importjava.util.ArrayList;importjava.util.List;publicclassMain{publicstaticvoidmain(String[]args){Listlist=newArrayList<>();list.add("Apple");list.add("Banana");list....
ArrayIndexOutOfBoundsException, NullPointerException, ClassCastException, ArithmeticException 这些家伙, e.getMessage() 都是 null 。 结合代码分析, 不是我针对空指针,早就看它很不爽,一起解剖它! publicstaticvoidmain(String[] args){try{ List resultList= getResultListTest();if(resultList.size()>0)...
private String resolveName(String name) { if (name == null) { return name; } if (!name.startsWith("/")) { Class c = this; while (c.isArray()) { c = c.getComponentType(); } String baseName = c.getName(); int index = baseName.lastIndexOf('.'); ...
Java import java.io.IOException; import java.net.URI; import java.nio.file.FileSystem; import java.nio.file.FileSystems; import java.nio.file.Files; import java.util.Collections; import java.util.stream.Collectors; public class MkobitZipRead { public static void main(String[] args) throws ...