How to use try catch to replace invalid data of user input array instead of restarting code in Java?

Whenever invalid input is entered, such as a letter, the code starts from the beginning. How do I get it so that it keeps rebuilding the code from where invalid input was entered. I want it to kick out the invalid input, and prompt the user to re-enter a valid input, and keep building it.

import java.util.Scanner;
public class Array {
public static void main(String args[]) {
int z = 1;
do {
try {  
Scanner scanner = new Scanner(System.in);
double[] myArr1 = new double[10];  //Creates array
System.out.println("");
System.out.println("Enter 10 elements: ");
System.out.println("");
for (int x=0; x<myArr1.length; x++) {
myArr1[x] = scanner.nextDouble();  //Gets user input
}  //end of for
double sum1 = 0;
for(double x=0; x<myArr1.length; x++) {
sum1 += myArr1[(int) x];  //Defines sum1
}  //end of for
double[] myArr2 = new double[10];  //Creates array
System.out.println("Enter 10 elements: ");
System.out.println("");
for (int y=0; y<myArr2.length; y++) {
myArr2[y] = scanner.nextDouble();  //Gets user input
}  //end of for
double sum2 = 0;
for (double y=0; y<myArr2.length; y++) {
sum2 += myArr2[(int) y];
}  //end of for
System.out.println("Sum of first 10 elements is: " + sum1);  //Prints sum of first 10 elements
System.out.println("Sum of second 10 elements is: " + sum2);  //Prints sum of last 10 elements
}/*end of try*/catch (Exception e) {  //Catches errors in user input
System.out.println("Invalid input. Try again: ");
System.out.println("");
}  //end of catch
}//end of do
while(z==1);
return;
}
}

You can craft a helper method for input. It will continually prompt with the messages provided until a correct type is entered. This tends to come in handy when inputs need to be taken from different locations within the program.

public static void main(String[] args) {
Scanner input = new Scanner(System.in);
double v = nextDouble(input, "Please enter a value: ", "Improper type, try again: ");
System.out.println(v);
}
public static double nextDouble(Scanner input, String prompt, String error) {
System.out.print(prompt);
// loop forever
for(;;) {    
try {
double v = input.nextDouble();
return v;
} catch (InputMismatchException ie) {
input.nextLine(); // clear input buffer
System.out.print(error);
}
}
}

Here is an example from your code.

Scanner scanner = new Scanner(System.in);
String prompt = "Please enter a number: ";
String error = "Invalid input, try again";
double[] myArr1 = new double[10]; // Creates array
System.out.println("");
System.out.println("Enter 10 elements: ");
System.out.println("");
for (int x = 0; x < myArr1.length; x++) {
myArr1[x] = nextDouble(scanner, prompt, error);
} // end of for
double sum1 = 0;
for (double x = 0; x < myArr1.length; x++) {
sum1 += myArr1[(int) x]; // Defines sum1
} // end of for

Get rid of your existing try/catch blocks. And I don't know why you have a do/while since you aren't looping more than once.

or you can using while loop and a boolean value to get a number

Scanner scanner = new Scanner(System.in);
boolean bool = true;
double d ;//= scanner.nextDouble();
while(bool){
try{ 
scanner = new Scanner(System.in);
d = scanner.nextDouble();
bool = false; 
}catch(InputMismatchException e){
System.err.println("invalid input");
}
}

I've figured it out. I had to create a boolean, but also decrement the index of the array of where the bad input was being placed (i = i-1). I also made it just one array and set the first 10 values to x and the last 10 to y to make it a little bit simpler.

import java.util.Scanner;
public class Array {
public static void main(String[] args) {
double[] array = new double[20];  //creates array
boolean on = true;  //sets value "on"
while (on) {  //starts while loop
System.out.println("Enter 20 numbers: ");
System.out.println("");
for (int i = 0; i < array.length; i++) {  //creates user input prompt
Scanner input = new Scanner(System.in);  //gets user input
try {
array[i] = input.nextDouble();  //assigns user input to array[i]
}/*end of try*/ catch (Exception e) {  //catches invalid input
System.err.println("Invalid Input. Try again: ");
i = i - 1;  //decrements index of re-entered number
}  //end of catch
}  //end of for
double x = 0;
for (int z = 0; z < 10; z++) {
x += array[z];
}  //end of for
System.out.println("Sum of first 10 numbers = " + x);  //adds first 10 numbers in array and assigns them to x
System.out.println("");
double y = 0;
for (int z = 10; z < 20; z++) {
y += array[z];
}  //end of for
System.out.println("Sum of last 10 numbers = " + y);  //adds last 10 numbers in array and assigns them to y
on = false;  //breaks while loop
}  //end of while
}
}