using labels in java without “loops”

You get an error because a label cannot be applied to variable declarations, that’s just how the language grammar is defined (a label can only precede a Statement, and a LocalVariableDeclarationStatement is not a Statement). The reason is probably that it could cause confusion concerning variable scope. This works:

    label1: System.out.println("");
    label2: { LabelTest t = new LabelTest(); }