Java List Query Example: Finding a Target Number

Sure! Here is an example of Java code for performing a list query:\n\njava\nimport java.util.ArrayList;\nimport java.util.List;\n\npublic class ListQueryExample {\n public static void main(String[] args) {\n // Create a sample list of integers\n List<Integer> numbers = new ArrayList<>();\n numbers.add(10);\n numbers.add(20);\n numbers.add(30);\n numbers.add(40);\n numbers.add(50);\n\n // Perform list query\n int target = 30;\n boolean found = false;\n int index = -1;\n\n for (int i = 0; i < numbers.size(); i++) {\n if (numbers.get(i) == target) {\n found = true;\n index = i;\n break;\n }\n }\n\n // Display the query result\n if (found) {\n System.out.println("The target number " + target + " was found at index " + index);\n } else {\n System.out.println("The target number " + target + " was not found in the list");\n }\n }\n}\n\n\nIn this example, we create a list of integers and perform a query to find a specific target number (30 in this case). The code iterates through the list using a for loop and checks if each element matches the target. If a match is found, the loop breaks and the index of the match is stored. Finally, the code displays the result based on whether the target number was found or not.