Chapter: Java The Complete Reference - The Java Language - Exception Handling

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Java’s Built-in Exceptions

Inside the standard package java.lang, Java defines several exception classes. A few have been used by the preceding examples.

Java’s Built-in Exceptions

 

Inside the standard package java.lang, Java defines several exception classes. A few have been used by the preceding examples. The most general of these exceptions are subclasses of the standard type RuntimeException. As previously explained, these exceptions need not be included in any method’s throws list. In the language of Java, these are called unchecked exceptions because the compiler does not check to see if a method handles or throws these exceptions. The unchecked exceptions defined in java.lang are listed in Table 10-1. Table 10-2 lists those exceptions defined by java.lang that must be included in a method’s throws list if that method can generate one of these exceptions and does not handle it itself. These are called checked exceptions. In addition to the exceptions in java.lang, Java defines several more that relate to its other standard packages.








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