Skip to content

Commit 6674a00

Browse files
sriguna2020sriguna2020
committed
Dummy commit to new branch
1 parent b30c85e commit 6674a00

1 file changed

Lines changed: 102 additions & 102 deletions

File tree

‎src/com/winterbe/java8/samples/stream/Streams1.java‎

Lines changed: 102 additions & 102 deletions
Original file line numberDiff line numberDiff line change
@@ -1,102 +1,102 @@
1-
package com.winterbe.java8.samples.stream;
2-
3-
import java.util.ArrayList;
4-
import java.util.List;
5-
import java.util.Optional;
6-
7-
/**
8-
* @author Benjamin Winterberg
9-
*/
10-
public class Streams1 {
11-
12-
public static void main(String[] args) {
13-
14-
List<String> stringCollection = new ArrayList<>();
15-
stringCollection.add("ddd2");
16-
stringCollection.add("aaa2");
17-
stringCollection.add("bbb1");
18-
stringCollection.add("aaa1");
19-
stringCollection.add("bbb3");
20-
stringCollection.add("ccc");
21-
stringCollection.add("bbb2");
22-
stringCollection.add("ddd1");
23-
24-
25-
// filtering
26-
27-
stringCollection
28-
.stream()
29-
.filter((s) -> s.startsWith("a"))
30-
.forEach(System.out::println);
31-
32-
// "aaa2", "aaa1"
33-
34-
35-
// sorting
36-
37-
stringCollection
38-
.stream()
39-
.sorted()
40-
.filter((s) -> s.startsWith("a"))
41-
.forEach(System.out::println);
42-
43-
// "aaa1", "aaa2"
44-
45-
46-
// mapping
47-
48-
stringCollection
49-
.stream()
50-
.map(String::toUpperCase)
51-
.sorted((a, b) -> b.compareTo(a))
52-
.forEach(System.out::println);
53-
54-
// "DDD2", "DDD1", "CCC", "BBB3", "BBB2", "AAA2", "AAA1"
55-
56-
57-
// matching
58-
59-
boolean anyStartsWithA = stringCollection
60-
.stream()
61-
.anyMatch((s) -> s.startsWith("a"));
62-
63-
System.out.println(anyStartsWithA); // true
64-
65-
boolean allStartsWithA = stringCollection
66-
.stream()
67-
.allMatch((s) -> s.startsWith("a"));
68-
69-
System.out.println(allStartsWithA); // false
70-
71-
boolean noneStartsWithZ = stringCollection
72-
.stream()
73-
.noneMatch((s) -> s.startsWith("z"));
74-
75-
System.out.println(noneStartsWithZ); // true
76-
77-
78-
// counting
79-
80-
long startsWithB = stringCollection
81-
.stream()
82-
.filter((s) -> s.startsWith("b"))
83-
.count();
84-
85-
System.out.println(startsWithB); // 3
86-
87-
88-
// reducing
89-
90-
Optional<String> reduced =
91-
stringCollection
92-
.stream()
93-
.sorted()
94-
.reduce((s1, s2) -> s1 + "#" + s2);
95-
96-
reduced.ifPresent(System.out::println);
97-
// "aaa1#aaa2#bbb1#bbb2#bbb3#ccc#ddd1#ddd2"
98-
99-
100-
}
101-
102-
}
1+
package com.winterbe.java8.samples.stream;
2+
3+
import java.util.ArrayList;
4+
import java.util.List;
5+
import java.util.Optional;
6+
7+
/**
8+
* @author Benjamin Winterberg
9+
*/
10+
public class Streams1 {
11+
12+
public static void main(String[] args) {
13+
14+
List<String> stringCollection = new ArrayList<>();
15+
stringCollection.add("Sriguna");
16+
stringCollection.add("aaa2");
17+
stringCollection.add("bbb1");
18+
stringCollection.add("aaa1");
19+
stringCollection.add("bbb3");
20+
stringCollection.add("ccc");
21+
stringCollection.add("bbb2");
22+
stringCollection.add("ddd1");
23+
24+
25+
// filtering
26+
27+
stringCollection
28+
.stream()
29+
.filter((s) -> s.startsWith("a"))
30+
.forEach(System.out::println);
31+
32+
// "aaa2", "aaa1"
33+
34+
35+
// sorting
36+
37+
stringCollection
38+
.stream()
39+
.sorted()
40+
.filter((s) -> s.startsWith("a"))
41+
.forEach(System.out::println);
42+
43+
// "aaa1", "aaa2"
44+
45+
46+
// mapping
47+
48+
stringCollection
49+
.stream()
50+
.map(String::toUpperCase)
51+
.sorted((a, b) -> b.compareTo(a))
52+
.forEach(System.out::println);
53+
54+
// "DDD2", "DDD1", "CCC", "BBB3", "BBB2", "AAA2", "AAA1"
55+
56+
57+
// matching
58+
59+
boolean anyStartsWithA = stringCollection
60+
.stream()
61+
.anyMatch((s) -> s.startsWith("a"));
62+
63+
System.out.println(anyStartsWithA); // true
64+
65+
boolean allStartsWithA = stringCollection
66+
.stream()
67+
.allMatch((s) -> s.startsWith("a"));
68+
69+
System.out.println(allStartsWithA); // false
70+
71+
boolean noneStartsWithZ = stringCollection
72+
.stream()
73+
.noneMatch((s) -> s.startsWith("z"));
74+
75+
System.out.println(noneStartsWithZ); // true
76+
77+
78+
// counting
79+
80+
long startsWithB = stringCollection
81+
.stream()
82+
.filter((s) -> s.startsWith("b"))
83+
.count();
84+
85+
System.out.println(startsWithB); // 3
86+
87+
88+
// reducing
89+
90+
Optional<String> reduced =
91+
stringCollection
92+
.stream()
93+
.sorted()
94+
.reduce((s1, s2) -> s1 + "#" + s2);
95+
96+
reduced.ifPresent(System.out::println);
97+
// "aaa1#aaa2#bbb1#bbb2#bbb3#ccc#ddd1#ddd2"
98+
99+
100+
}
101+
102+
}

0 commit comments

Comments
 (0)