Problem 1 Add the following code that creates and initializes a 20 array al Then, call the method print to print the contents of the array. Understand how we can traverse a 2D array using loops and indexes where the 1" index is visualized as a row of a table and the second index as a column of a table. Understand the passing of 2D arrays as arguments to methods. package lab18; public class Lab18 { static void print( int[][) a1) { System.out.print ln(); for ( int i =0; i < a1.length; ++i) { for ( int j =0; j < a1[i]. length; ++j) 3 4 7 8 10 11 System.out.print( al[i][j] + " "); System.out.println(); } 12 13 14 public static void main(String[] args) { int [) [] a1 = { 15 16 E 17 {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12} }; 18 19 20 21 22 23 print( al ); 24 25 26 } 27 Output - lab18 (run) 8 run: 1 2 3 4 5 6 7 8 9 10 11 12 BUILD SUCCESSFUL (total time: 0 seconds) Problem 2 Overload method print with the following signature: static void print( String[][] al) The code inside print should be identical with the previous method print. String [) ) a2 - { {"john", "pau", "james" }, {"mary", "laura", "margaret"} };
Problem 1 Add the following code that creates and initializes a 20 array al Then, call the method print to print the contents of the array. Understand how we can traverse a 2D array using loops and indexes where the 1" index is visualized as a row of a table and the second index as a column of a table. Understand the passing of 2D arrays as arguments to methods. package lab18; public class Lab18 { static void print( int[][) a1) { System.out.print ln(); for ( int i =0; i < a1.length; ++i) { for ( int j =0; j < a1[i]. length; ++j) 3 4 7 8 10 11 System.out.print( al[i][j] + " "); System.out.println(); } 12 13 14 public static void main(String[] args) { int [) [] a1 = { 15 16 E 17 {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12} }; 18 19 20 21 22 23 print( al ); 24 25 26 } 27 Output - lab18 (run) 8 run: 1 2 3 4 5 6 7 8 9 10 11 12 BUILD SUCCESSFUL (total time: 0 seconds) Problem 2 Overload method print with the following signature: static void print( String[][] al) The code inside print should be identical with the previous method print. String [) ) a2 - { {"john", "pau", "james" }, {"mary", "laura", "margaret"} };
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Java Netbeans
![**Problem 1**
Add the following code that creates and initializes a 2D array `a1`. Then, call the method `print` to print the contents of the array. Understand how we can traverse a 2D array using loops and indexes where the 1st index is visualized as a row of a table and the second index as a column of a table. Understand the passing of 2D arrays as arguments to methods.
```java
package lab18;
public class Lab18
{
static void print( int[][] a1 )
{
System.out.println();
for ( int i =0; i < a1.length; ++i)
{
for ( int j =0; j < a1[i].length; ++j)
System.out.print( a1[i][j] + " ");
System.out.println();
}
}
public static void main(String[] args)
{
int[][] a1 = {
{1, 2, 3, 4},
{5, 6, 7, 8},
{9, 10, 11, 12}
};
print( a1 );
}
}
```
**Output - lab18 (run)**
```
run:
1 2 3 4
5 6 7 8
9 10 11 12
BUILD SUCCESSFUL (total time: 0 seconds)
```
---
**Problem 2**
Overload method `print` with the following signature:
```java
static void print( String[][] a1)
```
The code inside `print` should be identical with the previous method `print`.
```java
String[][] a2 = {
{"john", "paul", "james" },
{"mary", "laura", "margaret" }
};
```
**Explanation:**
- **Problem 1** demonstrates traversing and printing a 2D integer array in Java. The `print` method uses nested loops to iterate through rows and columns, displaying each element.
- **Problem 2** involves overloading the `print` method to handle a 2D array of strings. The syntax and method structure remain consistent with the integer version.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2b0b34ec-95c4-43d4-bedb-36b64d2a2da3%2Fe0b81c6b-3057-48bd-a050-2e61395aa2e7%2Fnjodkx2_processed.png&w=3840&q=75)
Transcribed Image Text:**Problem 1**
Add the following code that creates and initializes a 2D array `a1`. Then, call the method `print` to print the contents of the array. Understand how we can traverse a 2D array using loops and indexes where the 1st index is visualized as a row of a table and the second index as a column of a table. Understand the passing of 2D arrays as arguments to methods.
```java
package lab18;
public class Lab18
{
static void print( int[][] a1 )
{
System.out.println();
for ( int i =0; i < a1.length; ++i)
{
for ( int j =0; j < a1[i].length; ++j)
System.out.print( a1[i][j] + " ");
System.out.println();
}
}
public static void main(String[] args)
{
int[][] a1 = {
{1, 2, 3, 4},
{5, 6, 7, 8},
{9, 10, 11, 12}
};
print( a1 );
}
}
```
**Output - lab18 (run)**
```
run:
1 2 3 4
5 6 7 8
9 10 11 12
BUILD SUCCESSFUL (total time: 0 seconds)
```
---
**Problem 2**
Overload method `print` with the following signature:
```java
static void print( String[][] a1)
```
The code inside `print` should be identical with the previous method `print`.
```java
String[][] a2 = {
{"john", "paul", "james" },
{"mary", "laura", "margaret" }
};
```
**Explanation:**
- **Problem 1** demonstrates traversing and printing a 2D integer array in Java. The `print` method uses nested loops to iterate through rows and columns, displaying each element.
- **Problem 2** involves overloading the `print` method to handle a 2D array of strings. The syntax and method structure remain consistent with the integer version.
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