public class Test {
    private final int id;
    private final String name;
    private final String addr;

    private Test(TestBuilder builder) {
        this.id = builder.id;
        this.name = builder.name;
        this.addr = builder.addr;
    }

    public static class TestBuilder {
        private int id;
        private String name = "John doe";   // Default
        private String addr = "Chunryang";  // Default

        public TestBuilder(int id) {
            this.id = id;
        }

        public TestBuilder name(String name) {
            this.name = name;
            return this;
        }

        public TestBuilder addr(String addr) {
            this.addr = addr;
            return this;
        }

        public Test build() {
            return new Test(this);
        }
    }

}

Test t = new Test.TestBuilder(3).name("MooHyungSuck").build();