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Java Tutorial : Java Exception handling (catch block) |
Java Tutorial : Java Exception handling (catch block) |
Java Tutorial : Java Exception handling (catch block) |
public class ExceptionDemo1 { public static void main(String[] args) { String firstName = null; // May throw an Exception System.out.println(firstName.length()); String lastName = "Peter"; String fullName = firstName + lastName; System.out.println("fullName = " + fullName); } }
Exception in thread "main" java.lang.NullPointerException at ExceptionDemo1.main(ExceptionDemo1.java:8)
public class ExceptionDemo2 { public static void main(String[] args) { String firstName = null; try { // May throw an Exception System.out.println(firstName.length()); } catch(NullPointerException nullPointerException) { System.out.println("String is null"); } String lastName = "Peter"; String fullName = firstName+lastName; System.out.println("fullName = "+fullName); } }
String is null fullName = nullPeter
https://sites.google.com/site/javaee4321/java/ExceptionDemo_Catch_block_App.zip?attredirects=0&d=1
Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/ExceptionDemo_Catch_block_App
Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/7ea4d57e363810e74440016acde7820188971dcf/BasicJava/ExceptionDemo_Catch_block_App/?at=master
See also:
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