Question

java

1. Write a method header on line three with the following specs:

Returns: a boolean

Name: beTrue

Parameters: none

public class Main
{
  
   {
       return true;
   }
}

2.

Write a method header on line two with the following specs:

Returns: a String

Name: makeCapital

Parameters: a String named "name"

You should not be writing code on any line other than #2

public class Main {
  
   {
   String ans = name.toUpperCase();
       return ans;
   }
  
   //test case below (dont change):
   public static void main(String[] args){
       System.out.println(makeCapital("test"));
   }
}

3.

Returns: an integer

Name: addTwo

Parameters:

• An integer called "x"

• An integer called "y"

You should not be writing code on any line other than #3

public class Main
{
  
   {
       return x+y;
   }
  
   //test case below (dont change):
   public static void main(String[] args)
   {
   int total = addTwo(3,4);
       System.out.println( total );
   }
}

4.

Write a method header on line NINE with the following specs:

Returns: a double

Name: negate

Parameters: a double called "num"

Then, starting on line 11, write the code that will return the opposite value of num (if it's positive, make it negative, otherwise make it positive)

Examples:

• 4 ==> -4

• -10 ==> 10

• 1 ==> -1

• public class Main
  {
     public static void main(String[] args){
         System.out.println(negate(8)); //should be -8
         System.out.println(negate(-2)); //should be 2
     }
     //test case above (dont change):
    
    
     {
        
     }
  }

• 5.

  Write a method header on line NINE with the following specs:

  Returns: a boolean

  Name: bothEven

  Parameters:

• an integer called "num1"

• an integer called "num2"

• Examples:

• bothEven(4,6) ==> true

• bothEven(3,4) ==> false

• bothEven(-1,1) ==> falsepublic class Main
  {
     //test case below (dont change):
     public static void main(String[] args){
         System.out.println(bothEven(8,6)); //should be true
         System.out.println(bothEven(5,6)); //should be false

• Then, starting on line 11, write code that will return true if both num1 and num2 are even. Return false otherwise.

• 6.

  Write a method header on line TEN with the following specs:

  Returns: a char

  Name: getChar

  Parameters:

• a String called "word"

• an integer called "index"

• Examples:

• getChar("hello",1) ==> 'e'

• public class Main
  {
     public static void main(String[] args)
     {
         System.out.println(getChar("hello",1)); //should be 'e'
     }

  
     //Write your code below (don't change lines above):
    

• 7.

  Write a method header on line TEN with the following specs:

  Returns: a String

  Name: makeThreeSubstr

  Parameters:

• a String called "word"

• an integer called "startIndex"

• an integer called "endIndex"

• Examples:

• makeThreeSubstr("hello",0,2) ==> "hehehe"

• makeThreeSubstr("shenanigans",3,7) ==> "naninaninani"

• public class Main
  {
     public static void main(String[] args)
     {
         System.out.println(makeThreeSubstr("hello",0,2)); //should be hehehe
         System.out.println(makeThreeSubstr("shenanigans",3,7)); //should be naninaninani
     }
    
     //change only the code below

• please answer me quickly thank you so much

• Then, starting on line 12, write code that will return 3x the substring (no spaces) from "startIndex" to "endIndex"

• Then, starting on line 12, write code that will return the character in "word" at the index "index"

Answer 1

====================ANSWER ARE HIGHLIGHTED IN BOLD=============================

public class Main
{
  
   
public static boolean beTrue()
{
       return true;
   }
}

2.

public class Main {
  
public static String makeCapital(String name)
  {
   String ans = name.toUpperCase();
       return ans;
   }
  
   //test case below (dont change):
   public static void main(String[] args){
       System.out.println(makeCapital("test"));
   }
}

3.

Returns: an integer

Name: addTwo

Parameters:

• An integer called "x"

• An integer called "y"

You should not be writing code on any line other than #3

public class Main
{
  
   public static int addTwo(int x, int y) {
       return x+y;
   }
  
   //test case below (dont change):
   public static void main(String[] args)
   {
   int total = addTwo(3,4);
       System.out.println( total );
   }
}

4.

Write a method header on line NINE with the following specs:

Returns: a double

Name: negate

Parameters: a double called "num"

Then, starting on line 11, write the code that will return the opposite value of num (if it's positive, make it negative, otherwise make it positive)

Examples:

• 4 ==> -4

• -10 ==> 10

• 1 ==> -1

• public class Main
  {
     public static void main(String[] args){
         System.out.println(negate(8)); //should be -8
         System.out.println(negate(-2)); //should be 2
     }
     //test case above (dont change):
    
    
  public static double negate(double num){
  return -1*num;
     }
  }

• 5.

  Write a method header on line NINE with the following specs:

  Returns: a boolean

  Name: bothEven

  Parameters:

• an integer called "num1"

• an integer called "num2"

• Examples:

• bothEven(4,6) ==> true

• bothEven(3,4) ==> false

• bothEven(-1,1) ==> false

• public class Main
  {
     //test case below (dont change):
     public static void main(String[] args){
         System.out.println(bothEven(8,6)); //should be true
         System.out.println(bothEven(5,6)); //should be false

}

public static boolean bothEven(int num1 , int num2) {

return num1%2== 0 && num2%2== 0

}

• Then, starting on line 11, write code that will return true if both num1 and num2 are even. Return false otherwise.

• 6.

  Write a method header on line TEN with the following specs:

  Returns: a char

  Name: getChar

  Parameters:

• a String called "word"

• an integer called "index"

• Examples:

• getChar("hello",1) ==> 'e'

• public class Main
  {
     public static void main(String[] args)
     {
         System.out.println(getChar("hello",1)); //should be 'e'
     }

  
     //Write your code below (don't change lines above):
  public static char getChar(String word, int index) {
  return word.charAt(index);
  }
    

• 7.

  Write a method header on line TEN with the following specs:

  Returns: a String

  Name: makeThreeSubstr

  Parameters:

• a String called "word"

• an integer called "startIndex"

• an integer called "endIndex"

• Examples:

• makeThreeSubstr("hello",0,2) ==> "hehehe"

• makeThreeSubstr("shenanigans",3,7) ==> "naninaninani"

• public class Main
  {
     public static void main(String[] args)
     {
         System.out.println(makeThreeSubstr("hello",0,2)); //should be hehehe
         System.out.println(makeThreeSubstr("shenanigans",3,7)); //should be naninaninani
     }
    
     //change only the code below

   public static String makeThreeSubstr(String word , int   startIndex, int endIndex) {

String substr = word.substring(startIndex, endIndex) ;
return substr + substr+ substr;

}