Java Example - Array Sorting and Searching

The following example demonstrates how to use the sort () and binarySearch () methods to sort an array and find elements in the array. We define the printArray() output result:

/*
 author by w3cschool.cc
 文件名：Main.java
 */import java.util.Arrays;public class MainClass {
   	public static void main(String args[]) throws Exception {
      	int array[] = { 2, 5, -2, 6, -3, 8, 0, -7, -9, 4 };
	    Arrays.sort(array);
	   	printArray("Sorted array", array);
	    int index = Arrays.binarySearch(array, 2);
	    System.out.println("Found 2 @ " + index);
   }
   private static void printArray(String message, int array[]) {
      	System.out.println(message      	+ ": [length: " + array.length + "]");
      	for (int i = 0; i < array.length; i++) {
        	if(i != 0){
            	System.out.print(", ");
			}
			System.out.print(array[i]);                     
		}
		System.out.println();
	}}

The output result of running the above code is:

Sorted array: [length: 10]
-9, -7, -3, -2, 0, 2, 4, 5, 6, 8
Found 2 @ 5

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