6) What will be displayed on the message dialog when the following lines are executed? String name1= "Mahatma"; String name2= "Ghandi”; String space = "; String name3 = namel + space + name2; System.out.println(name3.length()); System.out.println(name3.indexOf("ha"));
6) What will be displayed on the message dialog when the following lines are executed? String name1= "Mahatma"; String name2= "Ghandi”; String space = "; String name3 = namel + space + name2; System.out.println(name3.length()); System.out.println(name3.indexOf("ha"));
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
How do you do this? JAVA
Transcribed Image Text:### Question 6:
**What will be displayed on the message dialog when the following lines are executed?**
```java
String name1 = “Mahatma”;
String name2 = “Ghandi”;
String space = “ “;
```
```java
String name3 = name1 + space + name2;
System.out.println(name3.length());
System.out.println(name3.indexOf(“ha”));
```
### Explanation:
When the given Java code is executed, the following steps take place:
1. **String Concatenation:**
```java
String name3 = name1 + space + name2;
```
This line creates a new string `name3` that is the concatenation of `name1`, `space`, and `name2`, resulting in:
```
"Mahatma Ghandi"
```
2. **Length Calculation:**
```java
System.out.println(name3.length());
```
This line prints the length of `name3`. The length is the number of characters in the string "Mahatma Ghandi", which totals 14 characters.
3. **Index of Substring "ha":**
```java
System.out.println(name3.indexOf("ha"));
```
This line prints the index of the first occurrence of the substring "ha" in `name3`. In "Mahatma Ghandi", "ha" first appears at index 2.
### Output:
The message dialog will display:
1. `14`
2. `2`
Hence, the output on the message dialog is:
```
14
2
```
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