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Sort arrays of objects in Java
An array of objects can be sorted using the java.util.Arrays.sort() method with a single argument required i.e. the array to be sorted. A program that demonstrates this is given as follows −
Example
import java.util.Arrays;
public class Demo {
public static void main(String args[]) throws Exception {
String str[] = new String[]{"apple","orange","mango","guava", "melon"};
int n = str.length;
System.out.println("The original array of strings is: ");
for (int i = 0; i < n; i++) {
System.out.println(str[i]);
}
Arrays.sort(str);
System.out.println("The sorted array of strings is: ");
for (int i = 0; i < n; i++) {
System.out.println(str[i]);
}
}
}Output
The original array of strings is −
apple orange mango guava melon The sorted array of strings is: apple guava mango melon orange
Now let us understand the above program.
First the string array str is defined and then printed using for loop. A code snippet which demonstrates this is as follows −
String str[] = new String[]{"apple","orange","mango","guava", "melon"};
int n = str.length;
System.out.println("The original array of strings is: ");
for (int i = 0; i < n; i++) {
System.out.println(str[i]);
}Then the Arrays.sort() method is used to sort str. Then the resultant sorted string array is displayed using for loop. A code snippet which demonstrates this is as follows −
Arrays.sort(str);
System.out.println("The sorted array of strings is: ");
for (int i = 0; i < n; i++) {
System.out.println(str[i]);
}
Updated on: 25-Jun-2020
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