plugins/InspectionGadgets/test/com/siyeh/igtest/numeric/octal_inspection/OctalRecognition.java

public class OctalRecognition {
  public void f() {
    int i1 = 0123;
    int i2 = 0_123;

    int i3 = 0;
    int i4 = 7;
    int i5 = 0x0123;
    int i6 = 0b0101;
  }
}