Below is a Java program to find the maximum value from a list of integers:

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

public class MaxValueFromList {

public static void main(String[] args) {

// Create a list of integers

List<Integer> numbers = new ArrayList<>(Arrays.asList(10, 5, 20, 15, 30));

// Find the maximum value

int maxValue = findMaxValue(numbers);

// Print the maximum value

System.out.println("Maximum value in the list: " + maxValue);


public static int findMaxValue(List<Integer> list) {

// Check if the list is empty

if (list == null || list.isEmpty()) {

throw new IllegalArgumentException("List cannot be null or empty");


// Initialize max with the first element

int max = list.get(0);

// Iterate through the list to find the maximum value

for (int i = 1; i < list.size(); i++) {

if (list.get(i) > max) {

max = list.get(i);



return max;



This program defines a method `findMaxValue()` that takes a list of integers as input and returns the maximum value in the list. The `main()` method creates a list of integers, calls `findMaxValue()` to find the maximum value, and then prints it to the console.