{"id":2282,"date":"2020-04-01T17:23:42","date_gmt":"2020-04-01T17:23:42","guid":{"rendered":"https:\/\/www.h2kinfosys.com\/blog\/?p=2282"},"modified":"2020-04-25T00:30:58","modified_gmt":"2020-04-24T19:00:58","slug":"exception-handling-in-java","status":"publish","type":"post","link":"https:\/\/www.h2kinfosys.com\/blog\/exception-handling-in-java\/","title":{"rendered":"Java Exception Handling"},"content":{"rendered":"

Program 1:<\/b><\/p>\n

The syntax for Try and Catch block<\/b><\/p>\n

try {<\/span><\/strong><\/p>\n

\u00a0\u00a0\/\/ write your code here<\/span><\/strong><\/p>\n

} catch (Exceptione) {\u00a0<\/span><\/strong><\/p>\n

\u00a0\u00a0\/\/ catch block<\/span><\/strong><\/p>\n

}<\/span><\/strong><\/p>\n

Now, let\u2019s learn about the program using try and catch block<\/b><\/p>\n

class Test<\/strong><\/span><\/p>\n

{<\/strong><\/span><\/p>\n

\u00a0\u00a0public static void main(String[] args)\u00a0<\/strong><\/span><\/p>\n

{<\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0try\u00a0<\/strong><\/span><\/p>\n

{<\/strong><\/span><\/p>\n

intnumber = 5 \/ 0;<\/strong><\/span><\/p>\n

System.out.println(“Try Block”);<\/strong><\/span><\/p>\n

}\u00a0<\/strong><\/span><\/p>\n

catch (ArithmeticExceptionae)\u00a0<\/strong><\/span><\/p>\n

Output is:<\/b>ArithmeticException => \/ by zero<\/span><\/p>\n

 <\/p>\n

Program 2:\u00a0<\/b><\/p>\n

The syntax for Multiple Catch blocks<\/b><\/p>\n

try\u00a0\u00a0<\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0{\u00a0\u00a0<\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0statement 1;\u00a0\u00a0<\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0statement 2;\u00a0\u00a0<\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0}\u00a0\u00a0<\/strong><\/span><\/p>\n

catch (Exception e)\u00a0\u00a0<\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0{\u00a0\u00a0<\/strong><\/span><\/p>\n

System.out.println();<\/strong><\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0}\u00a0\u00a0<\/strong><\/span><\/p>\n

}<\/strong><\/span><\/p>\n

catch (Exception e)\u00a0\u00a0<\/strong><\/span><\/p>\n

{\u00a0<\/strong><\/span><\/p>\n

System.out.println();<\/strong><\/span><\/p>\n

}<\/strong><\/span><\/p>\n

 <\/p>\n

Now, let\u2019s learn about Multiplecatchs block program<\/b><\/p>\n

 <\/p>\n

class List_Numbers<\/strong><\/span>
\n{<\/strong><\/span>
\n public int[] array_Numbers = new int[10];<\/strong><\/span><\/p>\n

public void writeList() <\/strong><\/span>
\n{<\/strong><\/span><\/p>\n

try <\/strong><\/span>
\n{<\/strong><\/span>
\n array_Numbers[9] = 10;<\/strong><\/span>
\n } <\/strong><\/span>
\ncatch (NumberFormatException ne)<\/strong><\/span>
\n {<\/strong><\/span>
\n System.out.println(“NumberFormatException => ” + ne.getMessage());<\/strong><\/span>
\n } <\/strong><\/span>
\ncatch (IndexOutOfBoundsExceptionie) <\/strong><\/span>
\n{<\/strong><\/span>
\n System.out.println(“IndexOutOfBoundsException => ” + ie.getMessage());<\/strong><\/span>
\n }<\/strong><\/span><\/p>\n

}<\/strong><\/span>
\n}<\/strong><\/span><\/p>\n

class Final {<\/strong><\/span>
\n public static void main(String[] args) {<\/strong><\/span>
\nList_Numbers list = new List_Numbers();<\/strong><\/span>
\nlist.writeList();<\/strong><\/span>
\n }<\/strong><\/span>
\n}<\/strong><\/span><\/p>\n

 <\/p>\n

Output<\/b><\/p>\n

IndexOutOfBoundsException => Index 10 out of bounds for length 10<\/span><\/p>\n

Program 3:\u00a0<\/b><\/p>\n

The syntax for Try, Catch and Finally block<\/b><\/p>\n

try {<\/span><\/strong>
\n \/\/ write your code here<\/span><\/strong>
\n} catch (Exception e) { <\/span><\/strong>
\n \/\/ catch block<\/span><\/strong>
\n} finally {<\/span><\/strong>
\n \/\/ finally block<\/span><\/strong>
\n}<\/span><\/strong><\/p>\n

Now, let\u2019s learn about Finally block<\/b><\/p>\n

class Main {<\/span><\/strong>
\n public static void main(String[] args) {<\/span><\/strong>
\n try<\/span><\/strong>
\n{<\/span><\/strong>
\nintzero = 5 \/ 0;<\/span><\/strong>
\n } <\/span><\/strong>
\ncatch (ArithmeticExceptionae)<\/span><\/strong>
\n {<\/span><\/strong>
\nSystem.out.println(“ArithmeticException => ” + ae.getMessage());<\/span><\/strong>
\n }<\/span><\/strong>
\nfinally <\/span><\/strong>
\n{<\/span><\/strong>
\nSystem.out.println(“Finally block is always executed”);<\/span><\/strong>
\n}<\/span><\/strong>
\n }<\/span><\/strong>
\n}<\/span><\/strong><\/p>\n

Output:<\/b><\/p>\n

 <\/p>\n

ArithmeticException => \/ by zero<\/span><\/p>\n

Finally block is always executed<\/span><\/p>\n

 <\/p>\n

Program 4:\u00a0<\/b><\/p>\n

The syntax for Multiple Tryblocks<\/b><\/p>\n

try <\/strong><\/span>
\n{ <\/strong><\/span>
\n statement 1; <\/strong><\/span>
\n statement 2; <\/strong><\/span>
\n try <\/strong><\/span>
\n { <\/strong><\/span>
\n statement 1; <\/strong><\/span>
\n statement 2; <\/strong><\/span>
\n } <\/strong><\/span>
\ncatch(Exception e) <\/strong><\/span>
\n { <\/strong><\/span>
\n } <\/strong><\/span>
\n}<\/strong><\/span><\/p>\n

Now, let\u2019s learn about Multiple try block<\/b><\/p>\n

class Exc<\/span><\/strong>
\n{ <\/span><\/strong>
\n public static void main(String args[])<\/span><\/strong>
\n{ <\/span><\/strong>
\ntry{<\/span><\/strong>
\ntry{<\/span><\/strong>
\nSystem.out.println(” divided arithmetic”); <\/span><\/strong>
\nint b =39\/0; <\/span><\/strong>
\n}<\/span><\/strong>
\ncatch(ArithmeticException ae)<\/span><\/strong>
\n{<\/span><\/strong>
\nSystem.out.println(ae);<\/span><\/strong>
\n}<\/span><\/strong><\/p>\n

try{<\/span><\/strong>
\ninta[]=new int[4]; <\/span><\/strong>
\na[4]=3; <\/span><\/strong>
\n}<\/span><\/strong>
\ncatch(ArrayIndexOutOfBoundsException e)<\/span><\/strong>
\n{<\/span><\/strong>
\nSystem.out.println(e);<\/span><\/strong>
\n}<\/span><\/strong><\/p>\n

System.out.println(“other statement); <\/span><\/strong>
\n}<\/span><\/strong>
\ncatch(Exception e)<\/span><\/strong>
\n{<\/span><\/strong>
\nSystem.out.println(“Excetion handeled”);<\/span><\/strong>
\n}<\/span><\/strong><\/p>\n

System.out.println(“The normal flow\u201d); <\/span><\/strong>
\n } <\/span><\/strong>
\n}<\/span><\/strong><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Program 1: The syntax for Try and Catch block try { \u00a0\u00a0\/\/ write your code here } catch (Exceptione) {\u00a0 \u00a0\u00a0\/\/ catch block } Now, let\u2019s learn about the program using try and catch block class Test { \u00a0\u00a0public static void main(String[] args)\u00a0 { \u00a0\u00a0\u00a0\u00a0try\u00a0 { intnumber = 5 \/ 0; System.out.println(“Try Block”); }\u00a0 catch […]<\/p>\n","protected":false},"author":1,"featured_media":2842,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[590,455],"class_list":["post-2282","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java-tutorials","tag-exception-handling-in-java","tag-java-exception-handling"],"_links":{"self":[{"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/posts\/2282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/comments?post=2282"}],"version-history":[{"count":0,"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/posts\/2282\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/media\/2842"}],"wp:attachment":[{"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/media?parent=2282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/categories?post=2282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.h2kinfosys.com\/blog\/wp-json\/wp\/v2\/tags?post=2282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}