EN 
Karan Singh
10 Mar 2023 9:08 AM
public Object m() { Object o = new Float(3.14F); Object [] oa = new Object[l]; oa[0] = o; /* Line 5 */ o = null; /* Line 6 */ oa[0] = null; /* Line 7 */ return o; /* Line 8 */ } When is the Float object, created in line 3, eligible for garbage collection?
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What will be the output of the program?
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public class Test { public static int y; public static void foo(int x) { System.out.print(foo ); y = x; } public static int bar(int z) { System.out.print(bar ); return y = z; } public static void main(String [] args ) { int t = 0; assert t > 0 : bar(7); assert t > 1 : foo(8); /* Line 18 */ System.out.println(done ); } }
public class Test2 { public static int x; public static int foo(int y) { return y * 2; } public static void main(String [] args) { int z = 5; assert z > 0; /* Line 11 */ assert z > 2: foo(z); /* Line 12 */ if ( z < 7 ) assert z > 4; /* Line 14 */ switch (z) { case 4: System.out.println(4 ); case 5: System.out.println(5 ); default: assert z < 10; } if ( z < 10 ) assert z > 4: z++; /* Line 22 */ System.out.println(z); } } which line is an example of an inappropriate use of assertions?
Attempt Nowpublic class Test { public void foo() { assert false; /* Line 5 */ assert false; /* Line 6 */ } public void bar() { while(true) { assert false; /* Line 12 */ } assert false; /* Line 14 */ } } What causes compilation to fail?
Attempt Nowpublic class MyOuter { public static class MyInner { public static void foo() { } } } which statement, if placed in a class other than MyOuter or MyInner, instantiates an instance of the nested class?
Attempt NowWhat will be the output of the program?public class X { public static void main(String [] args) { try { badMethod(); System.out.print(A); } catch (Exception ex) { System.out.print(B); } finally { System.out.print(C); } System.out.print(D); } public static void badMethod() { throw new Error(); /* Line 22 */ } }
Attempt NowWhat will be the output of the program?public class RTExcept { public static void throwit () { System.out.print(throwit ); throw new RuntimeException(); } public static void main(String [] args) { try { System.out.print(hello ); throwit(); } catch (Exception re ) { System.out.print(caught ); } finally { System.out.print(finally ); } System.out.println(after ); } }
Attempt NowWhat will be the output of the program?public class X { public static void main(String [] args) { try { badMethod(); System.out.print(A); } catch (RuntimeException ex) /* Line 10 */ { System.out.print(B); } catch (Exception ex1) { System.out.print(C); } finally { System.out.print(D); } System.out.print(E); } public static void badMethod() { throw new RuntimeException(); } }
Attempt NowWhat will be the output of the program?public class X { public static void main(String [] args) { try { badMethod(); /* Line 7 */ System.out.print(A); } catch (Exception ex) /* Line 10 */ { System.out.print(B); /* Line 12 */ } finally /* Line 14 */ { System.out.print(C); /* Line 16 */ } System.out.print(D); /* Line 18 */ } public static void badMethod() { throw new RuntimeException(); } }
Attempt NowWhat will be the output of the program?public class Test { public static void aMethod() throws Exception { try /* Line 5 */ { throw new Exception(); /* Line 7 */ } finally /* Line 9 */ { System.out.print(finally ); /* Line 11 */ } } public static void main(String args[]) { try { aMethod(); } catch (Exception e) /* Line 20 */ { System.out.print(exception ); } System.out.print(finished); /* Line 24 */ } }
Attempt Nowpublic class MyRunnable implements Runnable { public void run() { // some code here } } which of these will create and start this thread?
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