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Use of Static Imports in Java with Example


The main reason behind the static import feature in java5 is to reduce the unnecessary reference of class name to call static methods/fields.

package import.static.test;
import static java.lang.Integer.MAX_VALUE;
import static java.lang.Integer.MIN_VALUE;
import static java.lang.System.out;

public class StaticImportExample {

    public static void main(String args[]) {
      
       //without Static import
        System.out.println("Maximum value of int variable in Java without " +
"static import : "  + Integer.MAX_VALUE);
        System.out.println("Minimum value of int variable in Java without " +
static import : " + Integer.MIN_VALUE);
     
        //after static import in Java 5
        out.println("Maximum value of int variable using " +
static import : " + MAX_VALUE);
        out.println("Minimum value of int variable using" +
static import : " + MIN_VALUE);
    }
}

Output:
Maximum value of int variable in Java without static import : 2147483647
Minimum value of int variable in Java without static import : -2147483648
Maximum value of int variable using static import : 2147483647
Minimum value of int variable using static import : -2147483648

If the other static imported class has same method/field names.

1.)If it is wildcard * import, then first methods/fields will considered from first import.

2)If it method/field specific import, then java will throw a compile time error as,

In this case, we have to use complete class name to use second static field with wildcard * imports.


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thanks

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