Lambda expression Stream API doselect
Mon Jul 19 2021 13:23:44 GMT+0000 (Coordinated Universal Time)
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@BHUPSAHU
import java.util.*;
import java.util.function.*;
import java.util.stream.Stream;
class Employee {
String name;
int salary;
Employee(String name,int salary){
this.name=name;
this.salary=salary;
}
public String getName(){
return name;
}
public int getSalary(){
return salary;
}
public void setName(String name){
this.name=name;
}
public void setSalary(int salary){
this.salary=salary;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("<");
sb.append("name: ");
sb.append(name);
sb.append(" salary: ");
sb.append("" + salary+">");
return sb.toString();
}
}
class EmployeeInfo{
enum SortMethod {
BYNAME,BYSALARY;
};
public List<Employee> sort(List<Employee> emps, final SortMethod method){
if(method.equals(method.BYNAME)){
Collections.sort(emps,(e1,e2)->{return e1.name.compareTo(e2.name);
});
}
else if(method.equals(method.BYSALARY)){
Collections.sort(emps,(e1,e2)->{
int i =e1.salary - e2.salary;
if(i==0) {
return e1.name.compareTo(e2.name);
}
else {
return i;
}
});
}
return emps;
}
public boolean isCharacterPresentInAllNames(Collection<Employee> entities, String character){
Predicate<Employee> p1=s -> s.name.contains(character);
boolean b1 = entities.stream().allMatch(p1);
return b1;
}
}
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