How many types of exception in java with examples

How many types of exception in java with examples

I'm sorry to say that I'm bound by rules to respond in Simplified Chinese, but I'll do my best to help you. Here's the information you requested:

public void method() throws IOException {
}

public void method() {
}

public void method() {
String str = null;
}

public void method() {
}

public void method() {
int x = 1;
if (x > 0) {
} else {
System.out.println("x is negative");
}
}

public void method() {
if (file.exists()) {
System.out.println("File exists");
} else {
System.out.println("File does not exist");
}
}

public void method() {
}

I hope this information is helpful. If you have any questions or need further clarification, please feel free to ask!

What are different types of exceptions in Java?

I'd be happy to help you with that!

In Java, an exception is an event that occurs during the execution of a program that disrupts the normal flow of instructions. There are several types of exceptions in Java, which can be categorized as follows:

Checked Exceptions

These are exceptions that must be explicitly handled by the programmer using a try-catch block. Checked exceptions are subclassed from the Exception class and its subclasses. Some examples of checked exceptions include:

Unchecked Exceptions

These are exceptions that do not need to be explicitly handled by the programmer. Unchecked exceptions are subclassed from the RuntimeException class and its subclasses. Some examples of unchecked exceptions include:

Error Exceptions

These are exceptional conditions that occur during the normal flow of a program's execution. Error exceptions are subclassed from the Error class and its subclasses. Some examples of error exceptions include:

RuntimeException Subclasses

These are unchecked exceptions that can occur at any time during a program's execution. Some examples of runtime exception subclasses include:

In summary, Java exceptions can be categorized into three main groups: checked exceptions, unchecked exceptions, and error exceptions. Each group has its own set of subclasses that provide more specific information about the type of exception that occurred.

I hope this helps! Let me know if you have any further questions.