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lab_5 functional
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8 files changed

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‎build/java_labs/lab_5/Lab.class‎

52 Bytes
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‎build/java_labs/lab_5/problem_3/Problem3.class‎

3.66 KB
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‎src/java_labs/lab_5/Lab.java‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -38,7 +38,7 @@ public static void start() {
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java_labs.lab_5.problem_2.Problem2.start();
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break;
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case 3:
41-
// java_labs.lab_5.problem_3.Problem3.start();
41+
java_labs.lab_5.problem_3.Problem3.start();
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break;
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case 4:
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// java_labs.lab_5.problem_4.Problem4.start();

‎src/java_labs/lab_5/problem_3/Problem3.java‎

Lines changed: 63 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -3,22 +3,40 @@
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--||author : codechaser||--
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
6-
package java_labs.lab_4.problem_3;
6+
package java_labs.lab_5.problem_3;
77

88
import java.util.*;
99
import java.io.*;
10-
import java_labs.lab_4.problem_3.example.*;
1110

1211
public class Problem3 {
12+
private static void method1(int i) {
13+
if (i == 1) {
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int x = i / (i - i); // throws ArithmeticException;
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}
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else {
17+
Vector<Integer> v = new Vector<Integer>(0);
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int x = v.get(27); // throws ArrayIndexOutOfBoundsException;
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}
20+
return;
21+
}
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23+
private static void method2(int i) throws ArithmeticException, ArrayIndexOutOfBoundsException, FileNotFoundException {
24+
if (i == 1)
25+
throw new ArithmeticException("Checked ArithmeticException Thrown from method 2\n");
26+
if (i == 2)
27+
throw new ArrayIndexOutOfBoundsException("Checked ArrayIndexOutOfBoundsException Thrown from method 2\n");
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else
29+
throw new FileNotFoundException("Checked FileNotFoundException Thrown from method 2\n");
30+
}
31+
1332
public static void start() {
1433
while (true) {
1534
Scanner input = new Scanner(System.in);
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System.out.println("\n\n---------------------------");
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System.out.println(" P R O B L E M 3");
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System.out.println("---------------------------\n");
19-
System.out.println("[01] : PublicClassA Content");
20-
System.out.println("[02] : PublicClassB Content");
21-
System.out.println("[03] : PublicClassC Content\n");
38+
System.out.println("[01] : Throw Unchecked Exceptions");
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System.out.println("[02] : Throw Checked Exceptions\n");
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System.out.println("[-1] : Exit\n");
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System.out.println("---------------------------\n");
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System.out.println("Enter your choice :\n");
@@ -32,27 +50,49 @@ public static void start() {
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}
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switch (choice) {
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case 1:
35-
PublicClassA A = new PublicClassA();
36-
A.method1();
37-
A.method2();
53+
try {
54+
method1(1);
55+
} catch (ArithmeticException e) {
56+
System.out.println("Caught unchecked ArithmeticException from method1();");
57+
System.out.println(e + "\n");
58+
} finally {
59+
System.out.println("'finally block 1' reached!\n");
60+
}
61+
try {
62+
method1(2);
63+
} catch (ArrayIndexOutOfBoundsException e) {
64+
System.out.println("Caught unchecked ArrayIndexOutOfBoundsException from method1();");
65+
System.out.println(e + "\n");
66+
} finally {
67+
System.out.println("'finally block 2' reached!\n");
68+
}
3869
System.out.println("\n---------------------------\n");
3970
break;
4071
case 2:
41-
PublicClassB B = new PublicClassB();
42-
B.method1();
43-
B.method2();
44-
System.out.println("\n---------------------------\n");
45-
break;
46-
case 3:
47-
PublicClassC C = new PublicClassC();
48-
C.method1();
49-
C.method2();
50-
PublicClassC.Class1 C1 = C.new Class1();
51-
C1.method();
52-
PublicClassC.Class2 C2 = C.new Class2();
53-
C2.method();
54-
PublicClassC.Class3 C3 = C.new Class3();
55-
C3.method();
72+
try {
73+
method2(1);
74+
} catch (Exception e) {
75+
System.out.println("Caught checked ArithmeticException from method2();");
76+
System.out.println(e + "\n");
77+
} finally {
78+
System.out.println("'finally block 1' reached!\n");
79+
}
80+
try {
81+
method2(2);
82+
} catch (Exception e) {
83+
System.out.println("Caught checked ArrayIndexOutOfBoundsException from method2();");
84+
System.out.println(e + "\n");
85+
} finally {
86+
System.out.println("'finally block 2' reached!\n");
87+
}
88+
try {
89+
method2(3);
90+
} catch (Exception e) {
91+
System.out.println("Caught checked FileNotFoundException from method2();");
92+
System.out.println(e + "\n");
93+
} finally {
94+
System.out.println("'finally block 3' reached!\n");
95+
}
5696
System.out.println("\n---------------------------\n");
5797
break;
5898
default:

‎src/java_labs/lab_5/problem_3/example/PublicClassA.java‎

Lines changed: 0 additions & 44 deletions
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‎src/java_labs/lab_5/problem_3/example/PublicClassB.java‎

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‎src/java_labs/lab_5/problem_3/example/PublicClassC.java‎

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‎src/java_labs/lab_5/problem_3/example/PublicInterfaceA.java‎

Lines changed: 0 additions & 30 deletions
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