Example usage for java.util List stream

Introduction

In this page you can find the example usage for java.util List stream.

Prototype

default Stream<E> stream()

Source Link

Document

Returns a sequential Stream with this collection as its source.

Usage

From source file:Main.java

public static <T> String getCommaSeparatedNames(List<T> list, Function<T, String> function) {
    return list.stream().map(function).collect(Collectors.joining(","));
}

From source file:Main.java

public static <T> boolean contains(List<T> toFilter, Predicate<T> predicate) {
    return toFilter.stream().anyMatch(predicate);
}

From source file:Main.java

public static <T, R> List<R> map(List<T> list, Function<T, R> fun) {
    return list.stream().map(fun::apply).collect(Collectors.toList());
}

From source file:Main.java

public static <T, R> List<R> apply(List<T> list, Function<T, R> mapper) {
    return list.stream().map(mapper).collect(Collectors.toList());
}

From source file:com.kazuki43zoo.apistub.domain.model.KeyGeneratingStrategy.java

public static <T> String join(List<T> keys) {
    return keys.stream().map(e -> e == null ? "" : e.toString()).collect(Collectors.joining(KEY_DELIMITER));
}

From source file:Main.java

/**
 * Converts a List of Integers to an integer array.
 * /*from  w w  w  . j  ava  2  s .com*/
 * @param integerList List of Integers
 * @return integer array
 */
public static int[] intListToArray(final List<Integer> integerList) {
    return integerList.stream().mapToInt(value -> value).toArray();
}

From source file:edu.umd.umiacs.clip.tools.math.Formatter.java

public static List<Double> format(List<Double> list) {
    return list.stream().map(Formatter::format).collect(toList());
}

From source file:Main.java

public static <T> List<T> merge(List<List<T>> list) {
    List<T> result = new ArrayList<>();
    list.stream().forEach(result::addAll);
    return result;
}

From source file:Main.java

public static <T> BigDecimal reduce(List<T> list, Function<T, BigDecimal> mapToBigdecimalFunction) {
    return list.stream().map(mapToBigdecimalFunction).reduce(ZERO, (l, r) -> l.add(r));
}

From source file:ch.ge.ve.protopoc.jwt.JwtUserFactory.java

private static List<GrantedAuthority> mapToGrantedAuthorities(List<Authority> authorities) {
    return authorities.stream().map(authority -> new SimpleGrantedAuthority(authority.getName().name()))
            .collect(Collectors.toList());
}