java.lang.NullPointerException(空指针异常)是Java编程语言中常见的运行时异常之一。当应用程序尝试在需要对象实例的方法或访问器上调用方法或访问字段,但传入的是null引用时,就会抛出此异常。简单来说,就是当你试图在一个尚未初始化或已被设置为null的对象上执行操作时,就会发生空指针异常。 导致"attempt to read f
Caused by: java.lang.NullPointerException: Attempt to get length of null array at okhttp3.internal.tls.CertificateAuthorityCouncil.<init>(CertificateAuthorityCouncil.java:44) at okhttp3.OkHttpClient.<init>(OkHttpClient.java:190) at okhttp3.OkHttpClient.<init>(OkHttpClient.java:60) at okhttp...
JVMWrapper("JVM_ArrayCopy");// Check if we have null pointersif(src ==NULL|| dst ==NULL) { THROW(vmSymbols::java_lang_NullPointerException()); } arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); assert(oopDesc:...
java.lang.NullPointerException: Attempt to write to field 'int android.support.v4.app.Fragment.mNext,程序员大本营,技术文章内容聚合第一站。
HashMap反序列化时(readObject时)会将序列化时(writeObject时)写入的数据读出来,放入新构造的HashMap中以实现还原序列化之前的数据,下图可以看出调用了internalWriteEntries方法 然后建立Node数组(键值对数组)放入原数据 然后在readObject时读取并放入新的HashMap ...
2 JDK-8317507 hotspot/compiler C2 compilation fails with "Exceeded _node_regs array"Java™ SE Development Kit 7, Update 411 (JDK 7u411) - Restricted January 16, 2024 The full version string for this update release is 7u411-b09 (where "b" means "build"). The version number is 7u4...
JsonObject home = array.getJsonObject(0); String number = home.getString("number"); JsonArray instances are list objects that provide read-only access to the values in the JSON array. Any attempt to modify the list, whether directly or using its collection views, results in an UnsupportedOp...
(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());}// Check zero copyif(length==0)return;// This is an attempt to make the copy_array fast.int l2es=log2_element_size();int ihs=array_header_in_bytes()/wordSize;char*src=(char*)((oop*)s+ihs)+((size_t)src_pos<<l2es);...
A hint to the scheduler that the current thread is willing to yield its current use of a processor. The scheduler is free to ignore this hint. Yield is a heuristic attempt to improve relative progression between threads that would otherwise over-utilise a CPU. Its use should be combined with...
Unchecked exception thrown when an attempt is made to write to an asynchronous socket channel and a previous write has not completed. C# 复制 [Android.Runtime.Register("java/nio/channels/WritePendingException", ApiSince=26, DoNotGenerateAcw=true)] public class WritePendingException : Java.Lang...