Last updated on MAY 26, 2020 While trying to use provision oracle database procedure with options Deploy software and create database on OL8
,fails at Install/Clone Oracle Database Step with the following error: Job Steps Log for Job :Install/Clone Oracle Database My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts. 'Error An Unexpected Error has Occurred' resulting in an Error: java.lang.NullPointerException while trying to submit a job though web submission. This might also result in a Error 73 showing up in the Central Print Services (CPS) log files. Troubleshooting steps:
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In Java, the java. lang. NullPointerException is thrown when a reference variable is accessed (or de-referenced) and is not pointing to any object. This error can be resolved by using a try-catch block or an if-else condition to check if a reference variable is null before dereferencing it. How do I ignore Java Lang NullPointerException?Answer: Some of the best practices to avoid NullPointerException are:
What does NullPointerException mean in Java? public class NullPointerException extends RuntimeException. Thrown when an application attempts to use null in a case where an object is required. These include: Calling the instance method of a null object. Accessing or modifying the field of a null object. Can we catch NullPointerException in Java? Java NullPointerException is an unchecked exception and extends RuntimeException . NullPointerException doesn’t force us to use catch block to handle it. This exception is very much like a nightmare for most of java developer community. They usually pop up when we least expect them. How do I ignore an exception in Java?there is no way to fundamentally ignore a thrown exception. The best that you can do is minimize the boilerplate you need to wrap the exception-throwing code in. Use the word ignore after the Exception keyword. How do you cause NullPointerException?NullPointerException s are exceptions that occur when you try to use a reference that points to no location in memory (null) as though it were referencing an object. Calling a method on a null reference or trying to access a field of a null reference will trigger a NullPointerException . What is a throw exception? It is the response of the OS to any exceptional computing which results in error, and there is no direction within the program about what should be done. In programming jargon, developers say a program “throws an exception,” hence the term “throw exception”. Throw is also a keyword in C#. What is throwing exception in Java? In Java, exceptions are objects. When you throw an exception, you throw an object. You can’t throw just any object as an exception, however, only objects whose class descends from Throwable. Throwable serves as the base class for an entire family of classes, declared in java.lang, that your program can instantiate and throw. What is null pointer exception in Java?Null Pointer Exception In Java. NullPointerException is a RuntimeException. In Java, a special null value can be assigned to an object reference. NullPointerException is thrown when program attempts to use an object reference that has the null value. These can be: Invoking a method from a null object. What are the types of exceptions in Java?Types of Java Exceptions. There are mainly two types of exceptions: checked and unchecked. Here, an error is considered as the unchecked exception. According to Oracle, there are three types of exceptions: Checked Exception. Unchecked Exception . Error. How do I stop NullPointerException in equals method? What is the reason for NullPointerException in Java? NullPointerException is thrown when program attempts to use an object reference that has the null value. These can be: Invoking a method from a null object. Accessing or modifying a null object’s field. What is exception in thread main Java Lang NullPointerException?The exception in thread “main”java. lang. nullpointerexception error is an error or an exception which comes about when you try to conduct an operation with an object that has a null value. The “main” part means that the exception is in the main thread. Calling the length of an array if the array is null. Can we catch null pointer exception?As stated already within another answer it is not recommended to catch a NullPointerException. However you definitely could catch it, like the following example shows. Although a NPE can be caught you definitely shouldn’t do that but fix the initial issue, which is the Check_Circular method. When does the java.lang.nullpointerexception occur? The java.lang.NullPointerException is an error in Java that occurs as a Java program attempts to use a null when an object is required. The NullPointerException is a public class that extends the RuntimeException. Why does synchronized throw NullPointerException in Java? synchronized (mutex) will throw NullPointerException because “mutex” object is null. Sometimes we get an error page being sent as java web application response with error message as “HTTP Status 500 – Internal Server Error” and root cause as java.lang.NullPointerException. Is there a way to fix a null pointer exception?The exact fix for a Null Pointer Exception depends upon your situation and code. Here are some of the top ways to fix common Null Pointer scenarios: The biggest reason why Null Pointer Exceptions occur is human error. Make sure the program you have written carries the correct logic that you had initially intended. How can I detect a null pointer in Java?Detecting NullPointerException is very easy, just look at the exception trace and it will show you the class name and line number of the exception. Then look at the code and see what could be null causing the NullPointerException. Just look at all the above examples, it’s very clear from stack trace what is causing null pointer exception. How do you handle null values in Java? 10 Tips to Handle Null Effectively
When does a java.lang.nullpointerexception occur? What is NullPointerException ? NullPointerException – java.lang.NullPointerException usually occurs during runtime when a method of an object, belonging to a class is invoked, given the object value is null. Is there way to avoid null pointer exception in Java?Creating a Null Pointer Exception is easy, but avoiding or fixing it is tricky. While some integrated development environments (IDEs) warn you if you are accessing a variable before initializing it with some compatible value, most IDEs can not figure this out in complex situations, such as when passing a variable through multiple method calls. When to throw NullPointerException back at the caller?If the caller passes null, but null is not a valid argument for the method, then it’s correct to throw the exception back at the caller because it’s the caller’s fault. Silently ignoring invalid input and doing nothing in the method is extremely poor advice because it hides the problem. How do I fix Java Lang NullPointerException in Java?In Java, the java. lang. NullPointerException is thrown when a reference variable is accessed (or de-referenced) and is not pointing to any object. This error can be resolved by using a try-catch block or an if-else condition to check if a reference variable is null before dereferencing it.
What causes Java Lang NullPointerException?What Causes NullPointerException. The NullPointerException occurs due to a situation in application code where an uninitialized object is attempted to be accessed or modified. Essentially, this means the object reference does not point anywhere and has a null value.
How do you fix the exit code in Minecraft?How to Fix the Minecraft Exit Code 1? [Here Are 5 Methods] [.... Solution 1: Modify the Minecraft Launcher Path.. Solution 2: Change the Java Executable Path.. Solution 3: Disable Mods.. Solution 4: Reinstall Java.. Solution 5: Reinstall Minecraft.. What is exit code 1 Minecraft?According to multiple reports, the use of Forge mods is causing a crashing issue, an 'Exit code -1' message or a 'Java Runtime Configuration may be invalid' error message for many Minecraft: Java Edition players.
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Error: java.lang.nullpointerexception: unexpected error exit code: -1
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