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Update java-programs.md

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`@@ -1900,6 +1900,19 @@ LocalDateTime.ofInstant ( new Date().toInstant(), ZoneId.systemDefault());`
`1900`	`1900`	`<b><a href="#">↥ back to top</a></b>`
`1901`	`1901`	`</div>`
`1902`	`1902`
	`1903`	`+## Q. How to sort a list of strings using a lambda expression?`
	`1904`	`+`
	`1905`	+```java
	`1906`	`+public static List < String > sort ( List < String > list) {`
	`1907`	`+ Collections.sort(list, (a, b) -> a.compareTo(b));`
	`1908`	`+ return list;`
	`1909`	`+}`
	`1910`	+```
	`1911`	`+`
	`1912`	`+<div align="right">`
	`1913`	`+ <b><a href="#related-topics">↥ back to top</a></b>`
	`1914`	`+</div>`
	`1915`	`+`
`1903`	`1916`	`#### Q. How to find if there is a sub array with sum equal to zero?`
`1904`	`1917`	`#### Q. How to remove a given element from array in Java?`
`1905`	`1918`	`#### Q. How to find trigonometric values of an angle in java?`

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