Meh
Java Method Signature Quiz
Test your knowledge of Java programming with our engaging quiz focused on method signatures, return types, and array manipulation. This quiz is designed for those looking to enhance their understanding of Java concepts.
- Multiple-choice and checkbox questions
- Covers method signatures and return statements
- Designed for Java learners and enthusiasts
Which of the following is a valid signature for a method that takes two integers as input and returns a String?
Public static String function( int a, int b )
Public static void function( int a, int b, String r )
Public static int int function( String a )
public static int function( String a, String b )
Select all answers which would be valid return statements for a method with the signature:
public static double getWeight( String weight )
public static double getWeight( String weight )
Return "";
Return null;
Return 125.5;
Return "112";
Return 115;
Select all answers which would be valid return statements for a method with the signature:
public static double getHeight()
Return 3.0;
Return "5";
Return "2.0";
Return 12;
Return null;
Select all answers which would be valid return statements for a method with the signature:
public static int[] doSomething( double b )
Return 10;
Return new int[]{0, 0, 0, 0};
Return new int[]{1, 2};
Return 4.3;
Return null;
Select all answers which would be valid return statements for a method with the signature:
public static double[] doSomething( int b )
return 3;
Return "find";
return 17.2;
Return null;
Return new double[]{4.1, 2.0};
Select all answers which would be valid calls/invocations to a method with the signature:
public static int doSomething(int a, boolean b)
DoSomething(10, "false");
DoSomething("20", false)
doSomething(12, false);
DoSomething(10.5, "true")
DoSomething(20, true);
Select all answers which would be valid calls/invocation for a method with the signature:
public static void doSomething( int x, int y )
DoSomething( "one", "two");
doSomething( 10 );
DoSomething( 10, 25 );
DoSomething( null, null );
doSomething( 0, 0 );
Select all answers that could possibly be returned by the method below:
public static int doSomething(int a, int b){
return a / b;
}
2.5
-10
5
0
10.0
Select all answers that could possibly be returned by the method below:
public static int doSomething(int a, int b){
return a + b;
}
0
2.5
9.0-
-19
10
Which of the following statements would correctly instantiate the array below to have 4 rows and 3 columns?
int[][] vals;
Vals = new int[4][3];
Vals = new int[3][4];
Vals[3][4];
Vals[4][3];
Which of the following statements would correctly instantiate the array below to have 3 rows and 4 columns?
char[][] vals;
Vals = new char[3][4]
Vals[3][4]
Vals = new char[0][2]
Vals = new char[4]
Select all of the following statements which correctly assign a value to an index in the 2D array below.
int[][] vals = new int[3][6];
vals[1][6] = 8
vals[0][0] = 3
Vals[2][5] = 6
Vals[1][3] = -6
Vals[3][5] = 7
Select all of the following statements which correctly assign a value to an index in the 2D array below.
int[][] vals = new int[4][8];
Vals[4][7] = -1
Vals[0][-1] = 10
Vals[3][6] = 9
Vals[1][0] = 10
Vals[1][7] = 7
Which of the following has a value of 5 for the 2D array below?
int[][] vals = new int[3][5]
Vals
Vals.length
Vals[1].length
Vals[5]
Which of the following has a value of 4 for the 2D array below?
int[][] vals = new int[4][9];
Vals
vals.length
vals[0].length
vals[4]
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